There are pix of my LineX'd hood insert in my gallery if you want to see how it looks. My only complaint is that VA clay tends to penetrate the texture & is a PITA to get out.

The crack is caused by a mold seam on the back side of the hood insert (they all crack at the same place). Filling in that mold seam would help since you're gonna be all covered in resin anyway

FWIW, I was told that the hood insert is made of a special material that fiberglass doesn't stick to very well. I've no idea if it's true or not. If so, prep will be of extreme importance to ensure that the resin has something to stick to.