I do agree that spin and non-spin should be on different courses if at all possible for two reasons:
1: more races - not waiting for non-spins to finish
I disagree. First of all, the spin boats may not necessarily finish first. The non-spins might start first, they might be sailing a shorter course, or they might be sailing fewer legs. Secondly, nothing compels RC to wait for boats of another class to finish before starting you again. If you're sitting around waiting for a start, complain about Race Committee, not about other boats sharing the course.
2: at least the skippers of spin boats understand the limitations of driving downwind. People who do not regularly sail with a spinnaker might not understand the danger of getting in either the blind spot or forcing a spin boat to go over you downwind. That a recipe for disaster.
This is also a specious arugument. It's your responsibility to keep clear of leeward boats (when windward) or starboard-tack boats (when on port tack) - regardless of their sailplan. It's your job to watch your blind spot, and protect your escape lane - not theirs. They don't "force you to go over them" - you simply didn't plan ahead. If there's danger in these situations, it's because the give-way boat under spinnaker failed to keep a good lookout, failed to anticipate an encounter, or failed to keep under control.
Sincerely,
Eric
