On Wednesday, April 29, 2015 at 10:51:55 AM UTC-7, Bob Pasker wrote:
So, I was getting my first tow at a very busy and very well-respected gliderport, and I saw an area where I wanted to go, so I shift a plane's width opposite the turn direction and stayed there. The tow pilot kept going straight ahead. OK, maybe he didn't see me, or maybe like a fishing guide he is taking me to a secret spot with 10kts of lift.

Next day, different tow pilot, similar turn request, no response. When I asked the second tow pilot back on the ground, he says he didn't notice it.. They never pay attention to the position of the gliders because the glider pilots don't know how to stay on tow, and deviations are just an example of their poor flying habits.

Steering turns were taught to me at this place and this is on there web site. I'm surprised you old timers have not chimed in.
From Sky Sailing webpage:
http://www.skysailing.com/pages/signals1.htm

GLIDER SIGNALS:
Move to left/right, line up tail wheel to main of towplane = steering turn (note: you must remain in that position until you want the tug to go straight, use coordinated turns to get into position, DO NOT just rudder out)