On Sunday, March 25, 2018 at 11:34:44 PM UTC-7, Ramy wrote:
Chain links are often used instead of TOST rings for ground tows behind golf carts, as they are much cheaper. I noticed today that I can easily slide the chain link out of the nose hook of my glider without pulling the release, while in other gliders I can’t. Looks like my release has slightly more play, enough for the chain link to release, but not enough for the Tost ring which seem secured thanks to its larger size and thickness. Do other had such experience? Is there a reason to be concerned?

Ramy

Maybe there is no reason for concern if the chain link is used only for towing on the ground - unless using the chain link damages the Tost.

But, some years ago, when I was even more stupid than I am now, I had two, low altitude premature tow line releases when the chain link at the end of the tow rope slipped out of the Tost. I had carefully examined the weak link and ignored the metal link! Haven't done that since.