I was looking at the Nacra and Mystere sites and I found the following boats:

Nacra 500 L=16'8" B=8'2.5" Sail Area 14+3.8m2 Weight 340lbs
Url http://www.performancecat.com/nacra500.htm
NacraBlast L=15'9" B=8'0"
Url http://www.performancecat.com/pressrelease/news_letterold.cfm?ID=25
Nacra 450 L=14'10" B=8" Weight=280lbs
Url=http://www.performancecat.com/nacra450.htm
Mystere 4.3 L=14'1" B=7.5' Weight 230lbs mast 23'6"
Url http://www.mystere.ca/mystere/index.html


To me it is clear that any modern catamaran shorter than 16ft will be much faster than the orifinal Hobie14
I think that the Nacra Blast might be interesting because igt is smaller than a Nacra 5.0 or 500 and seems to be built as strong. If you move on a smaller boat like a Nacra 450 or Mystere 4.3, you will have a boat much easier to control.

There is also the Prindle 16, it is an old boat but it is stable and the main can be setup to have a reefing point. It would probably be the cheapest solution.