What seem to work very nicely in computer screen animations doesn't always seem to hold true when the wind starts changing direction as rapidly as it does.  I wish the wind could see the animations and behave itself.  

I did once toy with the idea of putting a "furl hold" device in place.  Something like a neo that would latch the tail at full furl and hold it there until it was reset the next day or when the weather had calmed down.  I know this would have a nuisance factor (especially with the big towers you have) but for mine it would just require a poke with a long stick.  This is bearing in mind that "full furl" on my mill is a rare event, and I don't depend on the power.

I have taken the mill down when I've heard of bad weather coming, just to be on the safe side. (it's a fast job for me).  This borrows an ethos from paragliders  ..... "it's much better to be on the ground wishing you were flying, than to be in the air wishing you were on the ground".   :-)