Rules: P/S and W/L. Pretty simple.
Until boats change course, of course...

Mike
So, if I'm on port tack, going to weather and a spin boat comes roaring down on top of me (also on port) what should I do?
If it's an ARC22, better pray . . .
That's some funny sh!t , right there.
Mark,
You CAN"T be holding your course and hitting people though(it sure was clearer when you could), you have to avoid collision or else you're at fault as well. Don't confuse the situation, by leaving out the important parts you dirty obfuscator.