Hello Pcatsailor,
I know this may sound strange to you because no other beach cat factory does this for their boats, but if you want to put a spinnaker on any SC product, CONTACT THE FACTORY. Aquarius-Sail has kits and a source for the sail to put a spinnaker on any of the SC products. The SC product line of boats was built with enough "STRUCTURAL MARGIN" so that you can add a spinnaker and you are not going to break anything, the mast is not going to invert and all kinds of other malfunctions occurr. The factory has experimented with spinnakers and gennakers and found that spinnakers make the boat go faster over the normal range of sailing conditions and points of sail than a gennaker does. The factory has found that most beach cat rigs are not stiff enough to hold the luff of a gennaker tight enough and straight enough to make a gennaker work well. Also gennakers greatly increase the loads in the rigging system, mast compression etc. Masts have been broken with gennakers but never with a spinnaker.
Bill