Since it is not very likely that you have an accurate TWA instrument, unless you are obsessively calibrating it every couple weeks, my suggestion is that the apparent wind angle is best kept between 90 and 130 AWA. This will get you a TWA probably closer to the 150s in most conditions and keep the kite filled.

I don't think you will find polars for a C36. But you can spend time on the water practicing. Your cruising kite is probably cut pretty flat which will make it difficult to sail deep angles. The lighter the wind is the higher you will need to sail. For us without the pole in 10knts of wind the sweet spot is around 125 AWA, in 20knts its around 145

I am holding a Polar Diagram in my hand as I speak. It is for a C36, with a 155% jib and a folding prop. It does not indicate which keel and mast the boat has, which makes a big difference. It was copyrighted and published in 1992 by US Sailing so I guess it was for a Mark 1 design. Perhaps they can be contacted for a copy and more information.

US sailing polars (I have that one too) are for deep keel as that was all that was offered at the time. It doesn't say which rig but you can bet it would say tall rig if it was available.

However those polars are developed by US Sailing's VPP computer program (basically, the IMS rating system). Most boats would use these as a starting point and, using expensive instruments, develop polars for the real world based on collected data. I've sailed around with the US Sailing polar taped to the bulkhead and they are of pretty dubious value.

You won't find premade ones for the Asym configuration, although that wouldn't affect the upwind stuff. You can get a set of polars by applying for a rating certificate under the ORC Club system, which is what has bascially replaced the IMS system. [url]www.orc.org[/url] will get you there. Again, of dubious value without extensive refinement.

All this aside, Jackson wasn't really asking for polars, what he wants is Targets, a subtle but important distinction in that targets will actually tell you what angles and speeds to strive for given a certain amount of wind to get upwind or downwind with the maximum VMG. Polars tell you roughly how fast you can go at any angle but don't help you pick an angle unless you apply some analysis to them.