Hunting blind plans. so you want to build your own blind? you are probably doing it to save money, or for the fun and rewards that go with building something yourself.. 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. Free pontoon boat plans. well look what we have cooking here: free plans to make your own pontoon boat! length: 12′ (3.7 m).