I make mine from a cut 60" of cable. With an end loop and gooseneck bend at the lock they are closer to a 56" cable I suppose.
I don't add a wire swivel to the end. Just use a barrel swivel to the stake.
The cable itself is the reason they are single use. If a catch is made, the cable is usually kinked in multiple placed or chewed and frayed.
The locks that I use can be used over and over.
You need to come up with a support system to hold your cables rigid. There are many different systems to accomplish this.
ProSqueezing Pro Staff