Free: Contests & Raffles.
When I was growing up I hung out with an old carpenter who also bowhunted. When we would hunt together he would always see more animals than me. He finally said to me, "Quit wasting your time looking for animals where they are not. Focus on where they should be." He wasn't being a smart arse. He was giving me some of the best information he could give. He was right and I started seeing more animals as a result. But, only time in the woods will help you understand where those areas are!
As far as blacktails are concerned, I'm beginning to think that I NEED to seek out areas that are mostly overgrown with large vine maple, plant like, deciduous bushes---the kind that are 5-10 feet tall and leaving you with a 10-15 yard shot--if I'm looking for BT bedded during the day. The kind that are impossible to go through without making a significant amount of noise. That I need to avoid mostly open forests with minimal ground cover that offer 30-40 yard shooting lanes...