Free: Contests & Raffles.
Personally, I don't like them. Mainly because my experience has been that too many of the people who build them - or any other semi-permanent structures on public land - feel entitled to that location and don't honor "first come, first served" on public land and instead instigate confrontations. I get they put in the scouting time and work, but that's just it - they are trying to claim that trail crossing, saddle, wallow, etc that caused them to choose that spot. I feel the same way about any claim of "right" to a spot.
When I see on far from the road, all rotted and scary looking, it makes me grin, kinda like some dude 20yrs ago was thinking the same thing I am, "what a dandy spot!"
i use to find wood stands all the time before the era of the mass produced stands. I just found one last week over a wallow that looks like its 30-40 yrs old
I'm 100% against them. They are a black eye on hunters and ammo for the haters. It's not all about you in the woods and you have no right to leave that crap behind. To a hater it's like dumping trash in the woods. Just my opinion.
Found this one 300ydrs fr the pull out on a old logging rd