My next board will be a bonzer5. I’m going to go with plywood over 1 lb eps construction like my last board. The ply is so strong that I went with only 2 oz glass over the ply. My question is- “Will glass on fins be any weaker over the 2oz?” I’m thinking the weight of the cloth has no bearing on resistance to delam but I could be wrong.
If the glass is well bonded to the ply, there should be no delam issues with glass on fins over 2 oz. over ply. See, you were not wrong.