I'm looking for a used spinnaker to retrofit onto my older Nacra. Anybody have anything that would work?

What size -old Nacra- are you talking about?

It's a 70's Nacra 5.2. I don't race the boat so it's just for the "fun" of it - I'm looking for something on the cheaper side but still functional for recreation. Thanks!

I bought a used Hobie 16 17.5m2 spi for my 5.2 of ebay. It's got a Hobie logo and a measurement printed on it, so I assume it is the standard hobie 16 spi. I had to add patches to it to make it work with a snuffer, but other than that it's been great.

It's a bucket of fun <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

Try an old F18 spi, preferably the small rig version which is 19m2.