I have a 1961 All American and the deck has a spot that is about 4' x 8' that was already removed. One of the boards that is a support that looks like a 2"x3" board has some rot in it but doesnt look to bad may need to be replaced in that one section and then the ply would need to be replaced as well. Is there a way to replace just a section of the 2x3 and not the entire thing? also how much resin would it take to glass in that 4x8 section of plywood i have to replace?