Back in my catamaran racing days, there were three fleets, A, B, and . C Fleet was pretty much the new people, B were the more experienced, and A was the “Elite. You started in C and worked your way up. The requirement was that after placeing first or second a given number of times, you wer required to move up and race against the better sailors. I doubt there would be enough racers for three tiers, but two might work using that system,