i found (when i used a feeder) that when you spread it morning and evening the deer normally wait until dark to eat it... once they smarten up... so what worked better was one time, at like noon..
this way the deer know its there all day, and they want to be the 1st to get it before another deer or swuirrles eat it all up, so i found they came earlier in the evening instead of at last light...
best yet, is dumping 50 # of corn on the ground on like thursday for saturday's hunt, and saturday to last til thursday.... (even though it only lasts like a day, i spread it really good and kick it under the brush so they have to work for it.... i spread 50 lbs in a circle about 30 yards diameter...