I have plans for a custom box and hope to turn the project into learning resin infusion. I originally planned to build completely out of 1/2" MDO (weatherproof signboard, not MDF) but saw the layup process of an awasome A-Cat, Predator Blog, and decided to use the MDO for framing and foam for filler, glassing over both. This weekend I spoke to an Albacore racer that was estatic about resin infusion. He saved a lot of weight and achieved greater strength over glass layup. Because they have a weight min, he was able to "overbuild" in the important areas.