The best, easiest and cheapest way to set any conibear it to use a rope. Used to carry a set up like that in my trapping days.
Items needed, 3ft 3/8" nylon rope (the soft kind) and I like to use a section of steel rod about 1/8-3/16" dia with the ends bent over past a 90 deg bend. This will slip over the traps spring near the spring loops. Make sure the ends are bent over enough to make insure it will not pop off. THAT can be exciting, and painful.
You use a good nylon 3/8" dia rope, about 3ft long. On one end you tie a loop, or run it through a section of iron or galv pipe about 6" long, and tie the end to the rope so as to make a loop to put your foot through while standing on the pipe. With the trap standing upright, like it would be when set, thread the other end of the rope up through the LOWER spring loop, then straight up through the top spring loop. Bring the rope back around the outside of the loops you just went through, and repeat the process, except this time, pull the rope straight up. Tie that end off on a handle of hardwood big enough to grip well with one or two hands (2 might be better), then grab sadi handle and give hera strong pull. This will pull the two spring loops together. Once together, the rope will be pretty easy to manage with one hand, and use the other to grab both jaws of the trap.
Now place the steel spring holder you made over the springs to hod them while you undo the rope. Take the rope out now, not after the trap is set and the clamp removed.
Once the trap is set, handle with care. Like others mentioned be careful of other animals like cats getting in there, the trap will kill instantly.