I am using Bridger #2 Offsets w/ 4 Coil. Caught my first fox today with a high left foot catch. It had EXTENSIVE foot damage. I was setting for coyote but got the fox. I don't know what I could have done different.
I used some Bridger #2OS 2-coils this year. They did not do any damage to the foxes. But I wasn't really happy with how high they got up on the leg. I was using them and MB-550's due to the abundance of coyotes.
My favorite dedicated fox trap is the Bridger 1.65
i'm useing duke 11/2 13/4 4coiled MB550 and sleepycreek 13/4 4coiled briger 1.65 and #3's and as of now the Duke 13/4 4coiled get's my vote as a all around fur catcher i got everything from coon to coyote's and Bobcat's with very minor Damage Note if you are going to use ANY DUKE Coil spring Trap make sure you clean up the end of the Dog with a file