I've been lurking, thanks to Google Translate, on the German rc soaring threads and have noticed a common theme and/or concern about GPS Triangle racing and rc OLC (online soaring contest) flights where the pilots have clearly flown beyond what seems like the limits of human vision.
While I am wholeheartedly behind the "rules light" emphasis behind this form of flying, I believe that allowing flights beyond reasonable human vision is a recipe for disaster, literally. We could objectively make a list of bad scenarios but I don't think that is necessary. We all understand the dangers and responsibilities that go along with flying large, heavy and fast scale gliders.
A small group of us that aero tow at Visalia regularly have been trying to get as much on-the-job training as possible during our monthly meetings. The air is a bit dirty at this site and it is often very difficult to tow to or beyond the typical 500 meter (~1600 feet) AGL maximum course entry altitude but when you release, you are WAY up there. Modestly, I have better than average distance vision and can barely see a large 6-meter ship at that height even on clear days.
I noticed in one European OLC flight submission that the maximum altitude was over 1,500 meters (~5,000 feet)! Clearly, the gentleman "flying" the plane didn't have visual on the sailplane and was flying FPV-like (first person view ala flying a UAV using onboard video) using the SkyNavigator software and a softly-tuned glider.
My point is this: if this form of sailplane flying is going to become popular in the US (and other parts of the world for that matter) , do we really want it to turn into a contest of vision? Most of us are likely in the 30-60 something years-old range so clearly this doesn't help promote any growth in the sport.
My suggestion is this: like full-scale soaring, place an altitude cap on the flight. If you "bust" it (go over it) your flight gets zero (0) points. The "system" can be made to warn you when you are approaching this altitude and already indicates your current height so you KNOW how high you are.
I hate adding more rules, regulations, complications, etc to anything but some sanity needs to prevail here and make this a test of soaring ability and not how far you and your helper can see/guess/speculate. 600 meters is damn high and I think that should be the cap.
I would really appreciate other's thoughts and constructive criticism,