I've tried walking cats out twice and I'm 1 for 2, didn't shoot it because it was a little small, the experience was fun...took all of 8 hours and found him right at dark.  I use to hunt them with dogs.  I think you can be surprisingly successful...but I do miss hunting them with dogs.  YOU ABSOLUTELY NEED TO PUT THE PRESSURE ON THEM...RUN THE TRAIL WHEN YOU CAN!  Hunt with two or three people.  I have friends that expect to tree them, they've caught at least 7 or 8 that I know of.