I have not seen this posted before so check this out from the WEST System Epoxy website:
655-K Plastic Boat Repair Kit
Repair plastic canoes, kayaks and inflatables made from HDPE, LDPE, ABS, PVC or polycarbonate plastic with the contents of this kit. The Plastic Boat Repair Kit features plastic-
friendly G/flex 655 epoxy,and is assembled with the do-it-yourselfer in mind.
Each Plastic Boat Repair Kit contains 8.4oz of pre-thickened G/flex epoxy, protective gloves, mixing pallets and mixing sticks. Illustrated, detailed instructions explain
how to repair splits and cracks in plastic boats, attach or repair reinforcement points on inflatable boats and repair pinhole leaks in inflatables.
The G/flex will bond to the core material. It does not bond to the skin on the Wave.
When you use it, the edges of the repair need a shallow taper, about 8:1.
Be very very careful about using the heat treatment/flame treatment. The skin on a Wave will bubble up. That is an
oh sh*t
moment. That happened to me when I tried to weld with a hot air gun. I pressed the bubble back in place, while it was hot enough to burn my fingers and have not had problems. I now use a tiny little tip on a butane or propane torch. If you have tools that you use and know well, try them. A welder told me he uses a super tiny tip on a brazing torch. That is his business and he knows his tools.
I have heard that silicon tape and heat shrink tape can be used to smooth rough spots. I was thinking that might something to try on the bow.
Right now, there is just not simple way to repair cross-linked materials. The only way, I know to fair an old hull would be to strip the skin and spray it with a
primer
that is compatible with epoxy and linear polyurethane and that would have to be done in a spray booth. There are companies working on repair kits and one of the goals for a next generation plastic in addition to cheaper, lighter, tougher, stiffer, etc is REPAIRABLE
Repairable plastics do exist. not sure why Hobie builds boats this way..its environmentally irresponsible