Thanks Larry. I will experiment a little, I bought a glue gun from Home
Depot and I will try to just put a bead of glue on some inconspicuous
place, and see how it will hold up. If it does not, I will try some
plastic weldong. The boat is supersafe because it is full of styrofoam
inside, I think, and I need it to boat on several small lakes
nearby.

A glue gun will not work. You have to melt the polypropolene.
Larry Hill