Free: Contests & Raffles.
IMO it wont do you any good to drop any bait and just sit over it. any deer that come in would have come in anyways. for a bait to really work you need to have it out there for a while. so the deer can get used to it and more and more can find it. and then if you have a spot with big bucks coming in it is very easy to run them off the site with your scent or noise or something else, and the will not come back.
The COB works great here on the Island... apples is the best but they can eat up a metric buttload of apples in a few nights.