Guy at my dock had someone use his slip while he was out and drafted more water then he does. Don't know who it was, they probably just used the slip because everything at the marina was full, or may have backed into it.

Appears the boats skeg cut one of the tubes slightly, kind of a deep scratch. This is the newer polyethylene tanks so trying to figure out the best and easiest method of repair. Figuring it needs to have all the weight off it, otherwise air will keep pushing out. He tried some JB Weld for plastic but I'm thinking more of the welding method, or some how get to the inside and put some kind of a pool patch kind of thing

HDPE? Big soldering iron and milk jugs for filler material. They make a flat tip for plastic work. I have seen ocean kayaks with the bottoms sanded off surfing with weld patches all over them. I fixed a sea doo oil tank with a propane torch but you gotta be quick with that much heat.

I'm finding in the 500+ degree area is what most say to use. Can see where higher heat could be used but would have to be easy with it

You can use a butane torch typically used by chefs to make creme brule. I steel my wife's to do that type of work. The small flame is easy to direct at the location. Any polyethylene filler will work. I typically use thin strips cut from PE pipe. Heat up the float till it turns shiny (melted) then add the filler and a bit more heat until it is fused. I hold my lift up with yellow ratchet straps so that no air is trying to escape from the cut.

Thanks, I like the idea and have a small butane torch