I recently rebuilt a 7-foot lapstrake pram as a mini-yacht tender (added transom knees, thwarts and knees, and oarlock stations). I've discovered that it requires quite a balancing act for one or two people to use her. She tows quite well and it is a joy to watch the water splash up under the bow but be deflected by the hull shape. The question I have is, when under tow, is there an ideal length of the painter? I estimate that she follows behind the boat by about 15 to 20 feet (I shorten the line substantially when I have to maneuver in the harbor).