I have a Hobie 17 with a Pentex squaretop and Pentex reacher. I used the stock Sport jib setup and had a custom 190 sq ft reacher made. The hexarachet blocks are on 18" track that are mount with the track 18" from the rear crossbar. The boat FLYS with 1 or 2 in heavy air, and with approx. 650 lbs in medium air last weekend it wanted to lift a hull. They can be found cheap. Mystere 4.3 is a nice boat too. I am getting a 2002 for $3000. If money is not a object get a Nacra A2 or Blade.
Doug
Hobie 17 # 007
sunfish
Soon to be Myster 4.3