To replace your stringers, follow this simple seven-step method: Prepare the surfaces. All surfaces should be clean, dry and sanded. Mark the area. Remove the damaged stringer. Make the core. Sand the surfaces. Bond the core. Finishing. Click to see full answer. Also to know is, how do you replace boat Stringer? Replacing stringers Mark the location of the outside surfaces of the stringer. Remove the stringer and core. Using the same species of wood as the existing core,trim a new piece of core material to fit the size and shape of the core in the removed stringer. Prepare the surfaces for bonding. Also, what is a full stringer boat? There is full stringer, which is when the stringers go from the transom all the way past the front bulkhead. A quarter stringer deal is just that, there is a structure around the engine for the mounts to bolt to and that is it. The strength in these comes from the keel beam and the floor. Also know, what is the best material for boat stringers? The best stringers are not wood. Just finished making (experimenting) with several different composite stringers utilizing various technologies, comprised of epoxy, Kevlar, carbon fiber, and other materials. Excellent deflection and stiffness and wont rot.How many layers of fiberglass do I need for boat stringers?Probably 3 layers fine if you glass or bond the floors to top of the stringers.