The other question is who is responsible for compliance with the tow regs?

The glider pilot (who probably never sees the rope)?

The glider pilot (who only gets to see one end if the ground crew happens to show it to him)?

The ground crewmember (who has no regulatory responsibility)?

Separately, in ASI's operation procedures manual, section 4.1 says: "Tow ropes are typically set up with a combination of Schweizer and Tost rings. If weak links are desired they must be provided by the glider owner."