I can't understand the problem with the tow rope. We always used the same hooking on point for winch and aero.
Some old gliders have a compromise hook, others have two hooks, some have just a CoG hook and an aerotow has to be done very carefully if at all. IF you are expecting to be towed on a nose hook and the wrong one is connected I'm not surprised it went wrong, though I am surprised the pilot didn't notice the wrong hook being connected.