I trap around brushpiles for cats.
I hang a flag(feather/fur) up high enough to catch the cats attention, but make it just out of reach for 'em (about 4'). Set the trap under the flag and use plenty of guide sticks around it. Add a little gland lure or urine nearby if you want, but I usually don't. By keeping the flag 4 feet or so above the trap, I have not had any problems with raptors.
If you can't use fur, feathers, or any other animal parts use anything that will catch the cats attention. I am seriously considering trying out white fake fur this season, hopefully it will last a little longer than the real fur/feathers.
This set goes in fast, and is simple and effective. Of course, you have to have brushpiles for it to work. Plenty of them around here, but in your area you may not have them.
P.S. All the brushpiles I set are near the woodline. I haven't set any out in the open. I just don't have the confidence in them, but I might be wrong.
THIS SPACE FOR RENT