I agree with a portion of what you are saying, the part about deer associating your scent with feed, I will agree with that. The part that I will throw out there is that you won't have your best buck's come to that feeder in the daylight very often, at least thats what I have found to be true in the last 20 years or so. I use feeders but I don't hunt them for buck's, I shoot my hogs and the wife and daughter get some doe's off the feeder but very seldom canI remember (in my region) having a mature buck at a feeder. I believe that to get a mature buck you have to get off the beaten path and to do that without being detected you must be as scent free as possible and play the wind to the best of your ability. Just my thoughts on the feeder/scent subject.