I have two boats. One fiberglass (with gel coat), the other is plastic (HTP) what type of paint would you use for an air brush design on either boat?

I do realize that latex base housepaint and water soluble poster paits are bad choices.

I am concerned that if I use a laquer base that the flexing of the hull will cause eventual cracking/peeling etc... I don't know if this would effect enamel in this way. It seems to be less brittle, but I don't know for sure.

What would/do boat builders use? Or if anyone knows a good library source would help.

Any information will be appreciated.

Thanks,

Paul