Free: Contests & Raffles.
I've killed two 6 point bulls from a treestand sitting near an active community wallow. They mosey in and aren't all jacked up on adrenaline, die quickly. Makes a world of difference in the quality of the meat.
ive killed 4 elk out of tree stands. find a good area where a few trails cross each other. salt the area every spring as soon as you can get to it. most of my spots have multiple generations of elk visiting. The cows bring their calves and then they bring their calves etc. set up a trail camera so you know how much actvity there is. it usually takes testing about 5 different spots to find a good one, so find as many spots as you can. A lot of good spots will suck during the season if someone camps nearby. Also some spots that dont have much activity before the season can get good once season starts if the elk get pressured into that area. its a very successful method.