Design, computer lofting, and kits for welded aluminum boats. specmar inc (previously specialty marine contractors) is an aluminum boat design, lofting, and kit company.. Boat plans for the 12 "it’s very nice to row, it’s fast and easy. it is also easy to car top. i don’t know the exact weight, but it’s no problem for two to put it.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins..