With portable poly products the step-in style post are only there to hold the poly product up. Depending on the lay of your land, the post can be a considerable distance apart, up 50-75' feet. If your land is hilly, post will have to be added accordingly.
Gallagher Pig Tail Posts Box of 50
Over all height is 41 1/2"
From the top of the Foot Plate to bottom of Loop where PolyBraid rest is 33"
1/4" thick post