I think I finally figured out the mast and rudder rake on my Nacra 5.0 this past weekend. I've got the mast raked back about 18 inches which is preventing the leeward bow from nose diving in puffs and I've got the rudders raked aft just to give me a little weather helm - boat has much better control now.

Thanks for all who gave me some advice in this thread.

The original Danno
P-18, Nacra 5