I have no idea why anyone should want to be on the other end of a tow rope to a glider.
The idea is full of potental problems most of these would result in death.
As to the population of gliding clubs...... individualy glider pilots are usuly OK but get them together and they become very rude to any one who is not a glider pilot. I dont think I could think of anywere more unwelcoming to a powered aircraft pilot than a gliding club.