Hang a plastic spoon or tin foil from the top of the trap. (Reusable) Then a few squirts of fish oil in and around the trap.
The very first coon I caught was in a small leg hold trap that had the pan wrapped in tinfoil and set under a bridge in shallow water.
I was too young to have a gun so I tried to kill the coon by dropping a rock on it from the bridge above. I had wired the trap to a log and it gave the coon quite a range of motion, it scared me as it would lunge at me if I got too close. After several failed attempts with rocks, I decided to walk to my cousins about a mile away and borrow a gun to finish the job. I remember it like it was yesterday.
