We punctured the bottom of a 12ft aluminum fishing boat one time; hauling wood for our deck. Hey, it was a trailer, and it was available. Surprising how fast the man from CHM Mobile Welding Nuevo did it, and the welding repair lasted for as long as we had the boat (several years). I gotta say, the stuff did work pretty good.
These Guys did a great job. They finished on time and on budget. We would highly Recommend them to anyone.