"Catamaran Racing for the 90's" is helpful for any size multihull, but Rick also wrote a book for the American Sailing Association. It is "Multihull Fundamentals, The Official American Sailing Association Guide to Cruising Multihulls." A.S.A. is in Marina del Rey, CA, and their phone number is 310-822-7171. Maybe that is more like what you are looking for, although it is much more general and basic as far as performance.