Pete, I think that the PC version (as opposed to the web version) of Kattack will allow you to do polars on any boat in any race. For example, you could go to the CRAW races and do a polar on me, Karl, Mark, or Daniel.
I'll play around with it...
Hi guys,
Ive been messing around with the Prostart and GPSAR and it spits out polars quiet easily.
Ive attached a polar of my old viper in 20 kts. I supose the you need to get different ones for wind and wave conditions.
After a second look the wind direction my be a little out of whack but you get the idea. GPSAR has great statistics on top and average speeds and also shows you the runs on the map.
Heres the proper one with the wind orientated the right way. I think the interesting thing is that the upwind vmg seems quite wide. So you can still get good upwind VMG even when you put the bow down pretty hard.
I've tried working with GPSAR and had little luck.
Pro Start is your friend Pete. It talks to GPSAR perfectly. I love it. Although there is almost zero time to look at it while sailing unless its light. But it records 40 hours of sailing on it. Its fun to go back through it and see where you went wrong. The detail is quite amazing.
I got my metal working mate to make me up a very light aluminium bracket that i sew to the tramp between the mast and the starboard hull just behind the front beam. It seems to work really well there. The jib self tacker seams to protect it from the spin sheets.