Sliding door latches.

[Soggy Bottom Ranch]

We have four sliding doors that go out into the pasture, one from each stall. Can I please get some options/ideas for latches for these doors? Pictures if you have them, would be great!

Hubby isn't sure what he wants to use yet, right now we have bungy cords, which is ok because the horses aren't in these stalls yet anyway. He said whatever it is, he doesn't want it putting big scratch marks in the steel where the doors slide.

Thank you!