Sam,

Make sure you check your mast rake. I know at the Newport Regatta we were raked too far back and felt pretty crappy in the light to moderate breeze. We basically have a light and heavy setting. For the light setting we are between the two screws on the rudder retainer, and for heavy air we are slightly below the bottom one when measuring from the bridle with he trap line.

For the rotator, base is aiming at the shroud, and we rotate back pretty quickly as we start to pull on downhaul. Brooks generally keeps main trim until I am wiring consistently, and he has found he can crank the main pretty tight and we sail a fairly high mode most of the time.

For jib trim we usually have the inside of the car at the first post in from the end, and sheet in the top whole of the clew board.

Just some ideas!

Edit: Our base on diamonds is 37.5, spreader rake is 53-55mm