4x4 piece of haf inch plywood with a trap/leg slot in bottom..center. Put some handles on back up near top for you to hold onto...and a block at the bottom to put toe of boot on.
Walk in to cat using plywood as a shield. Line up slot with trap/foot. Release and continue using as a shield to keep cat off of you.
This works very well to turn all sorts of things loose, including critters much bigger than bobcats. But you pretty much need a truck handy to carry it. I've used a catch pole, but I don't choke them down, just snug it up enough they can't slip it, stretch them out and take off the trap. I've used a forked stick when I didn't have anything else handy, just pin the cat down with it at the end of the trap chain, brace the other end of the stick against my hip and reach down and take the trap off. I don't necessarily recommend that method to others though.
Reese Mason of Idaho makes a dandy release pole that you can reach out and release the trap from a distance with. A little spendy, but it sure gets rid of a lot of hassle.
I wouldn't recommend choking a cat or lion clear down like wws shows, they won't all come back. No real need to choke a critter the size of a bobcat down though.