How many regattas can your region of RACERS support? What number of boats do you need to have a successful regatta... 10 one design class boats??... 7 boats in a one design class? (Assuming you are splitting costs with other mono 1 design classes?)

20 beach cats?.... or what ever it takes to cover your costs and hit the successful regatta bench mark.

Nothing good happens when people look at last year's results while they consider a racing class and see.... 3 and 4 boats in the fleet at the regattas your area features. (Why would I buy into a class with 3 or 4 boats turning out...Its just B S that the class is growing in this area)

Generally... if you add one... you MUST kill one...

Finally, don't underestimate the strength of the club behind the regatta... Lots of individual people can pull off one great event... but the hand off to the next team is a fail and when followed up with a sub par team... resulting in a so so event... people are not happy.