Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. The original boats were large enough to stand and fish in but narrow enough to pass through the rapids at the lower end of the river. we were approached by a former resident of newfoundland for this kind of boat except in a canoe model.. 16′ san juan dory, a flat bottom planing skiff of rather elegant lines, for outboard motors of between 10 and 20 hp.plans are us$75.00. 16′ fly fisher, a flat bottom specialized flyfishing skiff, for oar, electric, or outboard motors of about 2 hp.this much sought-after boat is designed to be light, simple, and have no line hang-ups..