It is illegal to hunt, shoot, or trap on private land without the owner's permission. Hunting from public roads requires permission of the landowner adjacent to the side of the road being hunted. Railroad rights-of-way require permission from the railroad.

Written permission is required to enter land posted with hunting and/or trapping by “Written Permission Only" signs, or land having trees or fence posts painted purple. Landowner permission should be obtained before pursuing wounded game onto private property. If you cannot find the landowner or get permission, contact your local natural resource officer. (HERE)

It is both illegal and dangerous to mount blinds or treestands on power poles, whether they appear abandoned or not.