Wayne,
I think adding weight as factor to the handicap system would make things very complicated.
The most easiest would be to add a minimum weight for every make and type of boat which is still impossible to do to my opinion.
(But I understand your reasoning, Carolijn weighed the same as we did (boat+crew) but had a more favourable rating).
Anyway, on the first day, where the lighter crews had the advantage on us we did best, on the second day with more wind we did worse...
If I'm correct, the A-cat don't have minimum weight and they race at a very high level of competition on boats where the crewweight has a lot more impact on the total weight then on the F16, so I see no reason to complicate things.