I've been reading up a little and I believe I should actually drill a small hole at the ends of the crack to keep it from expanding.
Then there is something called whaley-welding, where you actually use duct-tape (I know...I'm from WV...lol), heat it up,...and put lots of layers on it heating and applying them with pressure.
The only problem, on the examples of this technique I've seen on the internet, they were applying the "weld" on the inside of the boat. That is not going to be possible for me as the pontoons are hollow but sealed all the way around....so my "weld", if that's the rout I take will have to be on the outside and below the waterline. Any thoughts on that??? any other suggestions????
Thanks
chad--hb