"True airspeed, with a wingsuit, I think we're getting up to 2.4:1, but are getting as high as 4:1 with the right tailwind, and would probably go above that with the uppers at much higher altitudes. What type of glide ratio were Christoph Aarns, Patrick Barton, and other accomplished Skyray flyers getting on the prototype... or even the regular Skyray, based on both true and indicated airspeeds?"
Christoph and Patrick did around 3 with the "series size" Prototypes and more with the big one. average flight speed is over 220km/h with the small one and a bit less 190-200km/h with the big one. In thinner air the flight speed drastically increasses! in 10.000 m it should be around 350 km/h!
With the smalll one they where able to achieve 0 m/s sink rate for a couple of seconds. This is proved by Airtech (CYPRESS)
Flightspeeds where logged with GPS flying against or 90° to the wind (to ensure a landing at the DZ)
ALBAN