I just got a response from the rigging department at West Marine. Apparently this is a "feature" of vectran lines!
"After consulting with our Splicing loft supervisor we feel that part of your issue is a normal occurrence with Vectran cored rope. The Vectran does have a slightly oily feel and...
Three years ago I put new Vectran v-110 halyards on my S2 7.9. They are very fine lines, indeed, and performed up to my expectations ... but this year they started slipping through the rope clutches, which is rather annoying. I checked the clutches and the jamming surfaces were not worn, nor...
Try putting a little bit of aft rake into the rudder blade.
it also has exactly zilch directional stability. I can not let go of it. The second I do the tiller is headed for the far side of the boat and we round up. I mean, it's nearly instantaneous.
Uncomfortable as hell to sit in it down below! When the manufacturer takes the brochure photos they will find VERY short attractive people to make it appear roomy.
Of course, there are several tactical maneuvers available on the dead-downwind leg. Sailing with the whole parade down the rhumb line to the mark may mean you are missing some interesting options, even if you are sailing JAM. Myself, I prefer triangle course since it has an extra...
If you win the boat end of the line and faster boats are to leeward, you will soon be sailing in a relative header compared to the boats to your left and you will have to bail out and tack to port eventually -- do it sooner than later to avoid sailing slow and low any longer than you have to...
Hoyt booms work a lot better if you keep the jib outhaul OUTSIDE the boom tube -- been there, done that. Lots of friction, complicated to re-feed the line, and the hole in the boom for the line is a potential entry point for water to get into the boat.
Boomkicker - http://www.boomkicker.com/bk_specs.html They have models for up to 38' boats, they say. Used them on 22' and 25' boats and they behave like a Vang-Master, only cheaper.