Jon,

How much mast rake have you been using in sloop and cat configurations? And how do YOU measure it? (I am getting a little weather helm sailing uni.)

Also, how about prebend? I'm at the "factory" setting of 2.25" as measured from the trailing edge of the mast to a straight edge layed across the diamonds at the spreaders.

I enjoy sailing cat rigged, but I need more power in light wind, so I'm wondering if I need to decrease mast rake and decrease prebend. My understanding is that I can get more power by decreasing the prebend. Then when the downhaul is barely on the leech will stand up more and the sail will be more full up high, yet I can still depower with downhaul/luff tension as needed.

Comments or advice, anyone?