5200 is said to be permanent adhession and sealant meant for below the waterline fittings such as livewell intakes. That being said, it's good stuff, but also you can dent it with a fingernail. If you ever go to remove it you'll need some 5200 remover. If this is a 50 dollar pond beater, go for it but on the inside only, if on the bottom outside it'll eventually get worn off from dragging, but still would last a good long time. Keep in mind if you use it, you will never be able to weld it up like it should be.

Even from the grave, I still got the 411.

Wannabe...