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  1. #1
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    Lifting a boat off a trailer

    Hello all,

    I am a new member who has enjoyed the forum for years and now is in need of some help...
    I would like to lift my Nitro 929 off the trailer to work on the trailer. I plan to repaint the trailer, replace the bunks and work on the fenders. I would also like to work on the bottom surface of the boat while it is off the trailer. I have access to a warehouse, forklifts,straps etc..
    Any techniques,equipment list, placement of straps, what to set it on, tires?
    Let me thank you for your time in advance.

    Larry

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    #2

    Re: Lifting a boat off a trailer (LarryL)

    I have wanted to know that also.

  4. Member bkfish's Avatar
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    #3

    Re: Lifting a boat off a trailer (Fishingtomatoseed)

    The way I've done mine is:
    Jack trailer all the way down in front,
    two jackstands under jackplate, screw all
    the way up on jack. Rear of boat is off trailer.
    Floorjack under front of boat(keel). Lift boat off trailer.
    pull trailer forward till you hit crossbrace. Set boat back
    on trailer. Move jack to otheside of brace and jack back up.
    This may take a couple of times.When trailer is out from under
    boat replace jack with jackstand(under keel). Some may disagree
    with this proceedure but it has worked for me.

  5. Member
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    #4

    Re: Lifting a boat off a trailer (bkfish)

    bkfish, thanks for your input.
    I am going to go ahead with lifting the boat off the trailer, probably in a few weeks. I'll post pictures and comments then.
    Larry

  6. Member
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    #5

    Re: Lifting a boat off a trailer (LarryL)

    i always felt that jacking up the boat was always to risky.......launch let a buddy play with the boat do you thing pick him up at the end of the day



  7. Member
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    #6

    Re: Lifting a boat off a trailer (erienightrider)

    Well.. what I did was strip out everything from the boat, got the motor and the topcap off... and gutted out the interior of the hull, then I built a Hull stand with 4 bunks and slid a tarp over it... then my brother and I just half-lifted, half-slid the hull onto the hull stand... leaving the trailer BARE and free for me to do some adjustments and sanding/grinding...

    Reason for this is that the trailer currently is half/half (half paint, half rust) and I wanted to strip it CLEAN so I could repaint it with Herculiner... so far its heck of a job but in the end, it'll be worth it and beautiful...

    Otherwise, ask a friend who lives on a lake and is willing to have your boat tied up to their dock for some time while you do all the work you need on the trailer and pick it up when you're done with the trailer...

    Hope this helps some...

  8. Ft Gibson Lake America lakefolk's Avatar
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    #7

    Re: Lifting a boat off a trailer (Rebel9921)

    or if you live near a marina talk to them about maybe renting a slip for a week or so..

    "Being a winner is more than getting a first place trophy, it is acting like the effort was an honor and the trophy is just a decoration."

  9. Member
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    #8

    Re: Lifting a boat off a trailer (lakefolk)

    On my original post I related I wanted to work on the the trailer which really needs work, that's true, but the bottom of the boat also needs work - it has some deep scratches and a gouge or two so getting to the bottom of the boat is important.
    Larry

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    #9

    Re: Lifting a boat off a trailer (LarryL)

    I would like to know if you can take truck tiedown straps the 4 or 6 inch ones and put under it and raise it up from ceiling joists??

  11. Member
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    #10

    Re: Lifting a boat off a trailer (bassworm1)

    NO. Do not try to lift from ceiling joints. They are designed to support the load they have one them, and a touch more, but certainly not a point load such as a strap tossed over them. When they fail (and they will with that much weight on them) it will be sudden and a damned mess.

    Remember, the fiberglass hull on your average 20' bass boat is about 1800lbs empty and dry. No motor, no fuel, and no wet carpet.

  12. 22R
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    #11

    Re: Lifting a boat off a trailer (LarryL)

    Here's how I have done mine. Lower bow of boat as low as it can go with your trailer toungue jack. Cut a 4x4 just wide enough to catch the two jackplate brackets. Put two auto type jack stands under the jackplate with the 4x4 on the jackstands. Using toungue jack raise the bow as high as jack will go. This will lift rear of boat off of the bunks. Next Cut a 4x4 long enough to fit under the bow ( I wrap mine with a piece of carpet ) and let it rest under the bow eye. Position two saw horses or pipe stands wide enough apart so that the trailer wheels will clear them. Let the bow down onto the 4x4 with the toungue jack and the trailer will roll freely from underneath.
    The first time I did this I was scared to death to drop the boat. I have left boat suspended in my shop for months at a time while doing different things to it. My only concern is the Bow 4x4 breaking so I usually use a third jackstand to support it if I leave it for a while. A freind of mine used my equipment and did his Skeeter as well.
    Good Luck

    22R



    Allison XB2002 / Merc 150 XR6

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    #12

    Re: Lifting a boat off a trailer (22R)

    When you put the 4x4 uder the front eye does that mean that all the weight of the front of the boat is on that eye only? That sounds kind of scarry. I know you said you did yours this way. Do you have any photos of this !!!! Thanks

  14. 22R
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    #13

    Re: Lifting a boat off a trailer (Ranger 85)

    The Bow of the boat rest on the 4x4. The bow eye is just kinda a stop so that the 4x4 doesn't slide on the keel. Again I wrap the 4x4 with carpet to protect the Gel Coat. Yes all the weight of the front of the boat is on the 4x4. The Allison is pretty light up front, but a buddy of mine used my equipment on his 19ft Skeeter with no problems. When you lower the jack and the boat rest on the bow you will be able to roll the trailer freely from under it, Before you pull the trailer out push down a little on the bow to make sure that the 4x4 seems sturdy. I always put a third pipe stand under the middle of the bow just for extra precaution after I pull the trailer out. The only pic I have was taken with a cell phone.


    Hope the pic worked.
    22R


    Modified by 22R at 6:21 AM 7/21/2009



    Allison XB2002 / Merc 150 XR6

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    #14

    Re: Lifting a boat off a trailer (22R)

    OK the picture sure did help. The thing I missed was using pipe stands and not jack stands that will hold the 4x4 on an angle. I need to do some hull repair under the bunks on my 350 Ranger and I will be giving this a try. I will also be putting some other support under the keel when I lift mine because of being under the boat well doing the repair. Thanks for the photo it really cleared up the idea of how this would work out.

  16. 22R
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    #15

    Re: Lifting a boat off a trailer (Ranger 85)

    Just take your time and be careful. It will look like it is levitating when you pull the trailer out. It sure makes trailer/ bottom repairs easy and not rushed if you have room to hang it for a while. Let me know how it turned out and post some pics of your repairs.
    Good Luck

    22R



    Allison XB2002 / Merc 150 XR6

  17. Moderator JeffA's Avatar
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    #16
    good info, thanks

    "If you're going to mess with the king's queens, you better watch your ace, jack!"..
    www.thayersmarine.com www.zekoshoes.com

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    #17

    Re: Lifting a boat off a trailer (22R)

    I have a small garage (I rent) and I am continuing my restore soon, so my question is if I cannot fit the trailer in the garage can I pull the boat off in a tight space or am I better off making some type of roller jack stands?
    TJ Daveski
    Northeast, PA
    1987 Dyna-Trak 180 SS (restore)

    2000 Dakota Quad Cab
    US Navy Vet 2002-2006 EN3(SW)

  19. Member
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    #18

    Re: Lifting a boat off a trailer (httrdd007)

    When my hull was repaired at a fiberglass repair shop, they lifted the hull off the trailer with the front winch ubolt and the transom tie down ubolts. They have 2 hoist at the back and lower one and raise the other at the same time to turn the hull over on its side. This way it is alot easier to work on the bottom. They also sit the hull on old tires when it is not held up but their hoist. They said it is the way the hulls are handled at the factory with the ubolts to lift the hull. This would only be done with a bare hull, no motor or batteries or any loose items in boat.



    Javelin 370A
    Mercury 150

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    #19

    Re: Lifting a boat off a trailer (ctered)

    That eye bolt and transom tie downs are great .. but only if your 100% sure the bolts are tight and that the transom has no rot.. I've seen these rip out of the glass doing that on older boats .. yes alot of the factories do lift that way .. but they are doing so with every thing new.

    Be very very care full .. I trust nothing to chance .. always block and secure everything as you go !

    I fish There for I am

    I love the smell of two strokes, and polyester resin just not at the same time

    AKA NRG , Fish, Fishalishious


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    #20

    Re: Lifting a boat off a trailer (northrivergeek)


    Well we finally got the boat off the trailer.
    The pictures from 22R really helped !!
    The stand for the rear of the boat was made from 4x6's.



    The tongue of the trailer was lowered to the floor with a floor jack raising the back of the boat.



    The rear stand was put under the jack plate.




    The front of the boat was then jacked up using small aircraft jacks and a 4x6 - lifting the boat off the trailer. This was all set up wide enough for the trailer to be pulled out to be worked on.



    The bottom of the boat was repaired and polished.
    The trailer was in really bad shape. It was rebuilt and repainted.


    Larry

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