Okay so im going to make a PB and i have a sheet of CSM that I'm planning to cut up and add to the mixture (total boat epoxy resin) along with fumed silica for a thickener. Is this okay? If not what would be a good alternative to the CSM? Im going to fill in gouges in my keel. Dont care about paint because a keel shild will be installed at a later date. Thanks in advance