First off...I don't have a Seacraft. However, I have learned lots from this site and thought I'd share an experience I recently had spraying gelcoat.
I know you guys love your Awlgrip and Signature, but sometimes gelcoat fills the bill as well, especially if most of your gelcoat is still in good shape.
Anywho, hope you find this helpful since you guys have helped me a lot!
Gelcoat blog