I take it your useing 7x7 cable. you HAVE to use entanglement to hold a coyote in 5/64" 7x7 cable. As a matter fact.All cable you should use entanglement.In open ground,I like putting in 2 tangle stakes.
------------OR------------- Use kill springs.Altho I have NO, on line experance with kill springs. I have talked to enough snareman and made 1000's of snares with kill springs to know. That you much hit the magic number of 10 feet. Here I mean that the coyote must have a good head of steam when he hits the end of the snare.A 10 foot snare will give him enough run'n room to get up enough speed to SET the spring.
Dont think eather, that you must use a two piece lock with kill springs eather.In two piece locks I would go with the Wedge type lock (AMBURG).Cam locks I have no time for. I just plan dont like them.
Put a STINGER type spring behind a SLIM Lock .There my man,is a kill'n machine.
--------------Cable------------
I started out useing just what my instuctors and mentors were useing. After about 25 years,I Just started to think that there "Just might be something better".I tryed 1x19 cable and never went back.
1x19 is faster,when loaded properly.More twist and chew restant than 7x7.you can use a smaller size 1x19 cable than 7x7 for any given animal.