Planing hulls . in my previous article, i briefly discussed and touched on the different hull shapes available, how they work and how to distinguish these hull forms. All power boats 16′ long and under. tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support.. Wooden boat plans for sale: the flat bottom san juan dory, 21′ nexus dory, 23′ wooden shoe, and 27′ st. pierre dory.