I think that any time that you have created a "managed" situation, you are gonna see big bucks acting less and less cagey. I think that if you used feeders, salt blocks, etc. in a manner where the bucks knew the best time to access them is during the day, you would see much less nocturnal activity on their part. If you work hard at it, you can use timed feeders, time of placing feed, etc. to manipulate deer into a desired pattern of behavior. Hard to do the same thing with a harvested 40 acre cornfield.