Thanks for the link Rick. Due to your being so helpful to this class, and catamaran sailing in general, you will definately be getting my business

But I still need to know which system would be better for racing with a max-area mainsail on a 24' stick: 5:1 or 6:1...
-edit-
I went to the Mystere site for some comparison, and found that they are using a 6:1 system with a 102sq.ft. mainsail on a 23'6" mast. So, I'll be going with the 6:1 system. An interesting note from the Murrays catalog, is that the 6:1 can be turned into a 7:1 by attaching another block to the becket above the cleat on the base-block. Nice to have some flexibility