Probably a Sol Cat 15- I had one of those in North Carolina- Don't have any pictures here with me. Jib was an option-

There are some pics somewhere- Do a search on this site under Sol Cat 15 and you should find them-

They had pivoting centerboards, rear bottom of hull is fairly flat, rudders very similar to NACRA style-



Kirt

Kirt Simmons Taipan #159, "A" cat US 48