Here are some I thought of


Pro:
Lot's of boats racing
Good for advertising
Bigger party
More money for event
Lean to sail clinic
Cost could be lower for sailor


Con:
Not as many races
Some sailors would want to sail both events
Conflicts on race course
Need more space for boats/people/RV's
Could dilute each class
More staff to run event/food
Would confuse people watching if both classes sail the same course