You can go elaborate on your poles with crosses to help hang the critter up or you can go simple, just a rod and your support wire. I have used both and I prefer to go simple now, just a 5' piece of rebar with annealed #9 wire welded on, pigtailed around and the tag end poking out a little to keep the snare from slipping off the end. (this way I can use a steel fence post driver to pound them in)
My current poles...
Results...
Fancy poles (54" x 5/8" rebar, 6" T of 3/8" smooth rod, and 5/8" nut for attaching the snare)...
result...
Old coon kill pole too...
Results...
Hope that helps you out.
~ADC~