Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood. Duckhunter model 2+ man marshboat. the duckhunter is an expanded big mamma hull design with full decking. having been available in plan format for about 8 years now. Mill creek. single and double kayaks with cockpits so large that they are almost open boats, with huge buoyancy. these are the most versatile boats in our range: they.