Brad You need to mount a 'bail' about 18" from the top of the mast. It all depends on the cut of the spin you are using, typically a H17 would use the smaller Tiger spinnaker, 19 sq m. Google the instructions for the assembly of a Tiger, and you'll see the set-up there.
A 'bail' is a piece of s/s wire (or Spectra) that is suspended from that 18" mark, and usually goes all the way around the front of the mast... in other words, there is a 'drop' of about 5" from the hole in the mast down to the bail..... the bail allows for the upper halyard pulley to swing freely from port to starboard, so something like a 240 degree arc. Go and visit a buddy with a Tiger or a WildCat or an F16 or F18 cat. Once you see it, you'll understand it.
It is SCARY to drill into the track of the mast....I have pictures....do you know how to post pictures? I am challenged in that area....
The next trick is to mount the spin pole.....possibly to the dolphin striker or more likely to the front cross bar. Another scary drilling exercise. email me off line if you want pictures of how we did it.
If you've sailed with an asymetric before, you'll know the challenges - if not, enjoy your swimming, and remember to keep the mainsheet taut to act as a backstay.
_________________ 2015 H16, with spin, SOLD 1989 Hobie SX18 Sail # 1947 "In Theory..." 'Only two things are infinite, the universe, and human stupidity. But I'm not sure about the former.'
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