Hunting boot repair help

Ok so long story short my favorite (and only) pair of hunting boots has a hole burnt in the waterproof outer layer (pouring aluminum in hunting boots=bad, though it probably save my foot).

It is a small hole, and doesn't really cause me any problems unless I am trudging through water, then my boot fills up. Anyone got an idea of something I could use to seal it?

I wear a size 14 double, to triple E, so finding a new pair that I like, and doesn't cause me problems is a pain in the arse task I don't really want to undertake right now.

shoo goo

used to be at your friendly neighborhood wally mart for about 6-$7.00

Thank you! I'll give it a shot.