I have a 2004 Stratos 285 Magnum (Pro XL) with a 175 Johnson....The past few times I have ran my boat I noticed that I was taking on water...First time we fished about 6 hours, pulled the drain plug and water gushed out of it for maybe 3 or 4 minutes...Today we just ran the boat, after being in the water for maybe an hour I checked to see if there was any water in the hull, sure enough it was almost over my bilge pump...Me and him looked around the back, could not see any water leaking through, nor do I have any holes in my boat...What would be a good way to check for any leaks?...Has anybody had this issue before?...Thanks