Hey Rod
I'm no professional,but the area i am trapping rats has a fence line which the yotes are travelling along extensively as i walk the fence line checking rat stuff i see areas near their travel route where a well placed set would surely draw their attention,hence keeping them away from said fence, dirt mounds, rock piles etc,doesn't answer issue of pelt damage, but may give you options for set placement near to your fence line/ travel corridor, this is what i see in my area IMO,Peter and if i had more time i would be setting some steel in the ground,hence i will wait til i can snare them in the hedge row that runs full length of the marsh,as steel requires a 24 hour check and i still got a job i have to be at, unfortunately