Boat trailer plans for monohull boat 7m long, steel construction, complete parts list, assembly guide, detailed component & assembly drawings, 3000kg max.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. Free pontoon boat plans. well look what we have cooking here: free plans to make your own pontoon boat! length: 12′ (3.7 m).