Interview of ted gauthier at the glen-l gathering of boatbuilders in guild, tennessee. ted built the glen-l zip design which is a 14′-4" plywood runabout. Our boat trailer plans feature the most modern, up-to-date, and technologically advanced features available to give you a boat trailer thats equal or superior to. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for.