Ron,
I got a little different impression about my boat. I feel she definitely likes 10+kts and going solo in 20+ is not a problem. I sail her solo mostly. Can handle at least 12kts with jib, then I furl it, cause she easily flies hull with main only. I believe the boomless rig should benefit from prebend a lot, because it's going to help bending the mast with less effort. Do you remember your settings for clew traveler? Did you move it all the way in in high winds? Hint: it makes main sheet awfully tight and that's the only drawback with her. Other than that, she takes heavy weather very well.
Anyways, seems I can use Nacra F-18 Tuning Guide for starters. Just need a loose gauge to begin.
Philip, I do sail on Dillon about once a year... but on a keel boat, cause it is COLD and cats seems to be exterminated over there. But I believe I am not that Andre, although I'd love to come to Navarre Beach some day...
Upwind, clew in the middle as wind increases 3/4 forward.
The boat realy like a lot of sheet tension.
I am not a solo sailor, almost always have the same crew.
Yes, the early f18 numbers are very close except the mast rake.