I just made a daggerboard for a Sunfish using a solid piece of African tapele wood, which is similar to mahogany but about half the price. The cutting & shaping process took 4 hours, but I'm extremely pleased with the final product. I've already decided that when I break or lose one of my cat rudders, I'm gonna do 'em both in tapele. Although I do my own hack fiberglass work, I found wood much more enjoyable to work with. A couple of coats of epoxy paint later and it was all done.