Keep using the scent-control...it can't hurt, and it's good to have a routine (any routine) to follow. I agree with PSESilverhawk...you're too high up and being silhouetted. Also wear rubber boots. And finally, you need to move your set-up so you're on a trail leading to the corn, not over it. Deer are as smart as everyone says. Not an "intelligent" smart so much as a "nervous" smart, and we have become one of the predators that they are wariest of. Especially if you have lots of does around. I had an old man describe them as "170 lbs. of nerves on four legs" to me when I first started hunting.
Enjoy this great sport as often as you can, and when you finally arrow a deer it will be much more rewarding than dropping one from 200 yards away with a rifle!