Once out would you hoist the spi on such a day?
Yes. One reason being that the boat is alot better behaved with the spi up.
Basically, I personally always pull the spi in rough conditions. I really dislike going downwind in the rough without.
I'm personally not at all against trying hooters and compare them to asym spi's. Problem is of course that this can not be done in official F16 races as that will open up a can of worms with regard to rating systems and open class racing. That is why the midgirth rule is in the class rules.
Personally, I'm not at all convinced the hooter is a faster sail then the modern asym.spi ESPECIALLY not in the rough winds. I find support for this opinion in the 2008 Olympics (Tornado class) On this criterium alone I would favour removing the mid girth rule altogether from the F16 class rules; but we the issues above negate this.
Something one has to accept a hit for the greater good.
Wouter