Calling this time of the year I mostly use coyote howls that aren't any kind of threat sounds, so not many barks included, a lone howl higher pitched like a younger coyote, or a female would make, give it a minute or two before doing it again as they do that so they can hear a response, two howls then two barks and a howl, is called an interrogation call, wait for up to a minute or more before you do it again, they may just show up or they may answer if they answer go quiet and when they stop talking they are heading your way. When I want to release any animals from a foot hold trap I use a catch pole like the dog catcher uses they are expensive any board that you can put on an animal to hold it down and not get bitten is what a lot of people use, you don't want to try it with a skunk, unless you have a skunk in a live trap they will spray, and if you mess around with skunks in live traps you are going to smell like one. The size of a coyote's area depends on the amount of available food, traps need to be prepared for coyote work, cleaned rusted, dyed, pan leveled dog and pan notch filed to make a gun sear, jaw tips turned up, so the coyote doesn't pull them out of the frame, swivels added to the middle of the chain and the stake end, I like around 16"of chain so they can't pump the trap stakes out of the ground, pan covers made so dirt doesn't get under the pan when you set it and bed it solid. When trapping for a specific coyote I preferer to use red fox gland lure on my backing with my trap bedded 8"or 9" and to the right of my lure that is in the up-wind position from the trap, fine dirt is sifted and packed around the outside edges of the jaws so that if you push on any part of the trap, it doesn't tip or move, except for the pan. Winter trapping is a different matter completely because of the freezing and thawing and wet making your trap pan covering sag showing where it's located.