Mast rake with the big square tops? I'm still experimenting; From my experienence you don't need alot if any. I know it's early days but did you FEEL the F16?
I don't really know what to be aiming at for rake. Currently 4th hole from the top on the chain plates as a guess after rigging at John's a lot lower, John said "that looks like too much" so we guessed at 4. It's not enought as there is not much feel going upwind. Going to move down to 6th hole and see how that goes.
As far as feel goes, it feels good. Picks up well in the gusts, drives nicely with the kite up and all the systems (except one plate not fitting in the slot) all work well, boat points well even with only 1 1/2 plates down. Mast rotation feels simple and efficient. 12:1 DH works well (yet to sail when I was needing to pull on hard and then let all the way off, so we'll see if I go back to 8:1 or not). Mainsheet system is very good and the Ratchamatic is very nice, don't like the actaul rope so I'll be changing this today. Not sure I've got the Kite sheeting angle in the right place, but I'll let everything bed down before I start putting more holes in the boat. Not planning to sail today as I'm off swimming with my son (and it's blocking dogs off leads here as well).