You can mount a spinnaker kit from any 18' cat on that boat. it doesn't have to be 'custom made' but on almost all older boats they have to be 'custom installed'. Here's a web page that describes the process
http://home.comcast.net/~…ra/nacra_spinnaker_1.htm http://home.comcast.net/~…ING_INTER_20_SNUFFER.htm I'm sure there are better more recent pages out there with step by step instructions.
If you can afford it I would get a complete spin kit for an F18 that comes with mast tang, spin pole, snuffer sock, sail etc. that is the easiest way to do it. Otherwise you can do what everyone else does and put it together from used parts you find on the classified adds. I also think there are a few guys out there who put together kits for older cats.
Regards,
Dave
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Dave Bonin
1981 Nacra 5.2 "Lucile"
1986 Nacra 5.7 "Belle"
Winnipeg, Manitoba, Canada
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