I put the masts close to the beams, whose position was decided by the rudders mounted on them. Boom length was to keep them inside the hull ends and clear of the other mast if caught aback. On the schooner rigged Elementarry, the front rig was much more powerful than the back, same as a main/jib. This is either because they help each other (same as main and jib), or because the aft one is in bad air, same as when you follow another boat close astern). I suspect the latter, but hope for the former, so put them close together.
The Wooden boat design competition has two HP designs, Nols' Wantoo and Rob's Expeditionarry. To learn more about HP's I tried to read the plans and understand in what way they are comparable and in what way they are different and in what way that could be tied in to the difference in their mission. Expeditionarry is a speed machine and thus more true to the mission intended by this competition; I suspect Wantoo has been more influenced by the mission of BD, namely, a safe cruiser. Both have quite a number of fun "inventions". I first was quite surprised about how few of these could be transplanted to the other design. In hindsight I should not have been. There are probably quite a number of features which I do not even know that I do not understand yet. Let me start with with those that I do know:
The position of the masts are more at the extremities of the lee hull on the Wantoo and that does not appear to be due to the length of the boom/wishbone. This would make the boat more sensitive to the difference in lift. Both designs choose to fix the position of the rudders to those of the masts. As the Wantoo is about twice as heavy and has a lee hull about 20% shorter would the position of the masts be a response to its slower speed?
Luc