I am contantly amazed at tug pilots who cannot see the difference in climb speed differences needed between club two seaters and heavy private type gliders.
I fly at the speed that the glider P1 puts on the tow-ticket. Most specify between 65-70 mph
I don't think we would get much of a climb rate at 70 kts plus at our DAs.
Our club two-seaters are the heavy gliders!