They are on average at least 2. 5 inches thick & twenty inches wide. Someone learning to surf should start on a longboard shape to learn wave selection, paddling technique, and turning basics. If this board had more thickness in the tail it'd sink less, paddle flat easier, plane into a wave faster, but feel less sensitive in a turn. How do you resolve these sacrifices and do you have a rule of thumb for whats acceptable or not in this situation? Hello; I put a bit more (on the middle. This joining of tail curve and flatter area of the mid section are one of the key elements of surfboard design and must be in concert with outline and rail shapes. It takes years of knowledge to know how much and where to put this bend. I have rail mounts on all my boards - just used the inserts from Aliexpress for around ~30€ and. The thinner a board is, the easier it is to “dig” the rails in the water since it won't float as much. Head Surf Coach Franco Rivas buries his left rail on a backside bottom turn. Doing the same drastic turn. What to consider when choosing fiberglass boat deck panels: Intended use: Decking vs. strength: Thinner panels reduce weight but may need additional supports for heavy. And what thickness? If it is polystyrene, then the polyester resin will just dissolve it, unless you plan to use epoxy resin. Yes I will only be using epoxy resin, during.