I actually made a little kit to carry with me. Not a bottle jack, but a small 2 ton floor jack with a 20" piece of 2x10 to use. Small 4 way, Milwaukee impact wrench, appropriate sockets, etc all in a craftsman tub. Fits nicely in the back seat of the cab. Just load it and go if I have the boat or another trailer behind the truck.
I have one and have used it often. I have had a small nightmare seeing the trailer slip off the jack and the stem of the jack poking a perfect $.50 piece hole in my hull.
2017 Phoenix 819
2016 200ProXS, s/n 2B359849, Mod 1200P73BD