NeubaurRL wrote:
The spinnaker kit is most likely what is listed in the hobie catalog as for the H16 but the kit has instructions how to install on H16, Getaway and H16.
The H18SX came stock with a spinnaker system which was considerably different from the H16 version. The H16 version has a more modern "snuffer system," featuring a sock on the spinnaker pole. The spinnaker is launched and retrieved by pulling it out the end of the "sock" or pulling it back into it. The H18SX version was bag launched - it was stored in a bag on the trampoline, requiring it to be doused and stuffed back into the bag each time it was lowered. I'm also fairly certain that the cut of the spinnaker of the H18 was fuller and the attachment point was higher up the mast, requiring an overall larger sail.
Boats that were not originally H18SX boats, but have been converted to them commonly use an aftermarket setup, which is also more similar to the modern systems of the F18 boats, Hobie Tiger and Wildcat, etc.