Tom S. beat me to it, but I was going to add:
The entire concept of GSBC's Combat weekend is to have fun first and foremost. If the "Speed Challenge" portion was to be "strictly legal"... then a pylon, a more accurate timing system, altitude indicators (your entire timed run of "x" amount of laps must be below 6' altitude I think?), etc, are to be in place. This is well and good if the attempt is going to be an "official" result... but making it "official" does tend to do two things:
* Make the speed portion of the weekend more "serious". (Complete with competitors beginning to be hyper-critical of others: "Not fair!! ONE of his timed laps was above 6'!!! Mine were all perfect!")
* Start the FF (Fun Factor) indicator sliding way down the FF scale in dramatic fashion.
As it is, the FF on a GSCB combat day is way upwards on the FF scale: Lots of very cool airplanes on display, lots of "fun flying" all day long, lots of excellent camaraderie among some truly fun guys to be around, on and on. Shucks... even the food was great! (Where did you guys get that great carry-out pizza in 2015??)
Got a fast airplane? Timed out to be one of the fastest at GSCB?
Bragging rights bro'... with fudge room for us others to say why you were faster than we were!!! (All the more reason to do it again next year!)
Yup, all in fun.
"Fun" is what is going to get Sharon and I to drive umpteen thousands of miles to attend another one!
