[Destroyer]

Originally Posted by billmongold

oh i like that pressure washer idea. may get some of the crap out from under the tank as well. id rather find out the tank leaks while the boat is on the trailer than when im miles from home. i dont need a whole lot of range, boat will probably be used primarily for tubing/possible light fishing/ticesmobile. i think tices is like 3 miles from me. im prettymuch across the bay.

if i were to pull the tank and it checks out ok how would i go about re-installing it? what kind of foam do you guys use? and i would probable replace the pvc pipe with a larger diameter one (to help prevent clogs [at least in my mind]) and glass the pipe in around the opening to prevent water from getting into the foam. is that a good idea or would that be a no no?

Cut the new hole the same size (just lightly larger) than the pipe, then use 5200 to seal the hole. No need to glass it in, the 5200 will seal it perfectly.

As to the tank, if you're just looking to hold it in place then Great Stuff or any aerosol foam will do. However, if you want the added flotation of the foam, then you'll have to buy one of the kits you can find on eBay made for underdeck flotation. Just remember that ALL foam, no matter what brand or kind, will eventually absorb water and hold it like a sponge. That in turn will add weight to your boat, plus it will rot out any wood under the deck, including your flooring and stringers. So what you really want, is to try with all your might to keep your underdeck area DRY!!!... Seal all cracks, holes (including through the gunnel rod holders) and basically anyplace else you can think of that might let water into the underdeck area.