Designed by Mark Van Abbema
My Dad wanted a trailerable boat for short cruises, and for traveling across the country exploring different waterways. He didn't want it to be any longer than 20 feet, because that would be the largest size he could fit on the trailer he has. (We bought a used trailer to launch "Heart of Gold" with.)
He wanted a comfortable berth, sitting headroom in the cabin, and an enclosed stand-up pilot house. We started with a design close to Sam Devlin's Surf Scooter, but when it was shortened to 20 feet, the pilot house and cockpit were both too small.
Speed was not a priority, so it has a semi-displacement hull. A 50 HP 4-stroke is the biggest motor contemplated, which should give a comfortable cruising speed of about 11-12 knots. We used a 25 hp Mercury Four stroke Bigfoot, which pushes the boat 7 knots at 4,000 rpm.
The cockpit sole is at the waterline, to give 6'6" headroom under the hard top, so it is not self bailing. There is a sump and a bilge pump for rainwater that may get in.