DNK gave you good info..

here is what sproul does..

i find white oak acorn tree that was used before by deer, nice if you have 3 real close.
i put fertilizer sticks you can get at agway..
i put about 8 or so around tree..

in years when there are not acorns,i have acorns..
guess where the bucks are,haaaaaaaaaaaaaaa.....