You need to check with some of the local sporting goods dealers around your area. But in all reality I doubt that you will find anyone that is willing to rent you one just due to the liability issue of it.
One other thing you might look at is buying one. There are some good cheap ones out there that you could buy for about the same price that you might be able to rent one for.
Lone Wolf Treestands is a newer high end stand. They are incredibly light which has great advantages when carrying it through the woods. You also can't go wrong with Ol'Man. They have been around for awhile and their new Drone with the Hex drive is very convenient being able to level yourself while up in a climber.
Wild boars are like many other (male) wild animals in that they will tangle over the affections of the fairer sex. Nature has however given them some additional padding over the fairer sex to prevent them from tearing each other to shreds. This bony cartiledge is most commonly referred to as the boar's shield. This armor helps prevent the tusks of mature males from penetrating into the vitals of their rivals (usually). I'd heard of such a thing before going on my first wild...