How to keep your seat foam dry forever.

[TT350]

I am recovering a 2 piece seat. This will be my second ski seat to recover.
My first seat the foam was soaked so I took it off the seat pan and using a bunch of old bath towels I put a towel on the pavement and the foam on it and one over the foam and drove my truck over it switching out the towels until it was 90% dry.

I have a powder coat oven so I set it to 250F for 6 hrs and the foam was dry like new.

I plan on doing the foam on this set of seats the same way but I want to try something to keep the foam from ever soaking up a drop of water no matter want.
I am thinking of spraying the foam with Flex Seal. What do you guys think?

[Myself]

I think you should stop rolling or sinking your ski. Then the foam won't get wet.

[TT350]

Foam is wet from rips in the cover.

[TT350]