If you have a climbing stand or climbing sticks, mount it up out of reach/out of the "line of sight". If you plan to put out some bait, be very sparing with it as it draws hunters attention as well as game.
If you want a REALLY cheap camera that will get you by, Rural King sells a 5 mp 15 foot flash camera that runs months on 8 AA batteries and records on a 32 gig micro SD card. It even has a 2" viewing screen built in.
Lots of high end cameras out there, just depends what you want to spend. You'll get lots more suggestions here. Good luck.