Free: Contests & Raffles.
I hadn't thought about that, but he'd probable say no, theres cows and horses in the field that he wouldn't want breaking legs!
Can you use a layout? They're cheap and portable - and last forever. Also - great concealment.
If it is going to be sitting there for 120 days, why not prefab a wood blind (2x4s, osb, tar paper, and deck screws) and break it down at the end of the season. That's what I would do, but I like cooking breakfast in the blind, doesn't work so well in a layout.