Towpilots ignoring turn signals

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.

--bob