Azcat:

Here is the downhaul setup you need:
http://store.catsailor.com/tek9.asp?pg=products&specific=jndrpnrrd0
Make sure you make your line long enough to go from trap to trap. That way to can adjust it from the wire.

As for having only one hole for mainsheet attachment. My Mystere 4.3 is like that and I have no problems. Telltales fly fine and she moves. I caught a Hobie 16 that was WAY ahead of me going to weather with no trouble.

As for mast rotation, I have none. Have to ask someone else on this.

Hope this help. Good sailing.

Doug