Timbo,

GYC ran more than 1 type at our event last year and there were no issues to speak of. The new start sequence where you can go as soon as your fleet is ready works pretty well.

If it is a big concern having an inner or outer course for the fleet having its Premeier event would eliminate the issue of mark roundings being bunged up with boats of other classes, yet still keep the number of race organizers and space to a minumum.

There are not many places we sail where there is not some obstacle. Shallows, weeds, crab pots, moored boats etc. At least other catamarans help pay to make the event better/bigger hopefuly.