To be fair, segregating Hobie Tigers and Nacra F18s in the area is hypothetical as I don't know of anybody with a non-Hobie F18 around here.

Mark - With regards to your modified Sailwave config file - If you have to consider all the possible combinations of modifications, I think it would become quite cumbersome : 12+ 12!/(2! * (12! - 2!)) + 12!/(3! * (12! - 3!) ... ... + 12!/(12! * (12! - 12!)) lines per class, which comes out to some obscene number. This would be necessary to accomidate any arbitrary boat upfront. For example, your system would not accomidate me because I take an MN adjustment.

Your solution of planning for a small number of expected cases upfront, and doing the unexpected ones on the fly seems like a good one, given the options available.

Pete