Hi all!

I am new in this forum and also in Fiberglass part making!
 Today I did apply first time gel coat on my project hood! and gel coat did wrinkle up in some areas!

Hood is clear coated, polished and waxed many times with easycomposites.co.uk mold release wax.

Gel coat is mixed with 2% of hardener!

I've had this too.  Could the join where the black bits meet filler have not taken the clearcoat properly.  If this is open the solvent from the gel can get under it and cause  paint reaction.  Best way I found around this is to use a two pack primer first and then clearcoat it.  As has been mentioned the clear needs to be fully cured which can be a good few weeks at room temp.