Save some money.and work. Put down a layer of epoxy, let cure, then lay up glass. Never a pin hole.
I use 1 layer 4oz and 1 layer 6oz "E" glass. Carbon is not needed. On my Corsair I need nose weight, I lay it up with a 6oz and a 10oz. All "E" glass plain weave.
In fact if you have vibration issues, kevlar would be better at the location where it bolts on.