My older Goodall spin worked best with 1/2 turn of the hand "looseness" of the luff.
My newer Glaser spin works best with a tight luff--hard to even turn the hand 1/4.
The older one was easier to keep flying.
The newer one has a narrower sweet spot but is "hotter."
Photo of the newer one attached, but wind was light.
I guess the photo didn't stick; try this:
http://www.flickr.com/photos/cornerofthefield/2599587836/Point is, every spinnaker cut is worked a bit differently, but you know when you're in the zone!
