I think the varied courses are a great idea so no special purpose boat has an unsurmountable edge due to one single strength.
The 100kg load brings us back to evenly weighting the crew. If I'm the heaviest crew on the course, do I still have to carry 100kg? If you want a weight load then just set a standard total weight of crew + adjusted weight. Make it 300# for one man boats, 400# for 2 man boats.
Sailnstink - the suggestion seemed to be that we all sail in PDracers. Thats not much of a design improvement contest. I think there should be no limits on boat type. Sand boxes and kite sailors should be welcomed. I would really like to see the single purpose boats have to compete evenly. A kite sailor that can make the three different courses well deserves to win. Perhaps the PDracer on hydrofoils would be capable enough to win. Lets prove it, or not. My personal interest would be to see the unconventional do well. You actually misunderstand, I like multihulls and always felt excluded, especially when I blew past monos on all points of the wind. I don't particularly like classic monohulls, but they ought to have just as much chance.
Don't limit any boats. That was the origin of my suggestion not to limit beam. Don't limit "sitting out aids" including IC canoe hiking boards, toe ropes, and trapeze wires. The logical conclusion of that is no one is allowed outside the gunnels - laser sailors beware. This is a race correct?