umpteen years ago when it was legal to set iron,a buddy of mine wanted a bobcat bad,he enlisted the help of a 80+ year old fellow who had done a ton of trapping,the setup was find tracks near the creek and a running log,set a trap at each end of the log and use fresh trout for bait.It worked well for him because he set 4 traps and got 2 cats on the first and only go around.If I hadn't seen the cats in the round I never would have believed it.
Perhaps fish in your cage would do you some good.