I have never heard of these products so I know nothing about them.

Man-I would not put any type of goo on the bottom of a Lund.

Might try it in on beater boat if you can't tighten the rivets because of the way it is made as a last resort to keep it afloat.

Sounds like you have to put it on every couple years. That's adding a substantial amount of maintenance on top of all the other stuff you have to do.