My dad bought a C-Dory earlier this year. It's a 22' fiberglass boat with twin Honda 50's. I also see the Alumawelds and Hewescraft aluminum ocean boats of similar size are very popular, but the only day I spent in PWS there were very few aluminum boats. This got me thinking, what are the benefits for either one, why would someone go with one over the other? I know aluminum is light which leads to more effiecient power from the power plant, but besides that I am clueless. Fill me in.