Apex, I've done something similar to one of my bikes in the past, when I was shooting a compound. I put them vertical though, with one on the handlebar in line with the one on the fork, so I'd be able to ride trails. You'd also benefit from putting toe clips on your pedals-gives you about 30% more power when climbing hills; you can still wear hunting boots, and they don't lock your feet into the pedals like the newer clipless pedals will. Especially for turkey hunting, a bike would allow you quick access and egress from a hunting area.