Well, I think it depends on the person...

I drive 3 hours after school/work on fridays to go hunt, so to capitalize on that time, I like to give myself as many advantages as i can...

It really depends on the hunter, I would never tell someone that there tactics are unfair (within reason)

I have hunted over a corn pile, and it doesnt guarantee anything, where I hunt there is so much food, that all it does is SOMETIMES, lure a deer who would otherwise skirt past you, to the corn....