If you are going to do a distance race, a reverse order start(Mugrace style) might be fun. Assigned times for starts and sign in sheet when you finish. Very little race committee needed. As far as swapping boats, 16's and 18's are easy, I think there is huge potential for damage on the spin boats and A cats. There is too much Lennardizing on these to be user friendly to inexperienced crews, and the A's are very different in rudder and mainsheet design. I can't even get my own rudders down. Maybe getting together after the race and doing a fun race with the more experienced skippers crewing on the less experienced boats would be fun and a learning experience, from both perspectives. I'll be there, Rick