Nick...I dont think there is a float made that could withstand the impact of a rock at 50mph. Im just trying to build a stucture that wont collapse under normal use. Ive seen a few UL float models in the past. The glass work is surprisingly thin...Maybe 3 or 4 ply at the most. I saw one set with a hot-wired foam core covered by one ply of 1oz deck cloth. They were super light...But IMO not strong enough.

Right now Im thinking 1 possible 2 layers of 5oz plain weave s glass followed by 3 layers of BID Keval 49 style 281. I can also reinforce the keel and chine areas with BID Kevlar over honeycomb or foam core or maybe apply some UNI Kevlar is key areas.

IU dont think I need many layers if I handle the internal reinforcement properly.

Ross