Baiting with corn is legal and can be very productive. It can also be very expensive. Many will say that you can not kill a mature deer over corn. Others will not hunt unless they are over a corn pile.
I only feed corn in August - September and November - December. I don't feed much in October because the deer are normally pounding acorns and I just can't afford to sling corn for 5 months. My dad and I had a tripod feeder on his farm and had very limited success in drawing in deer. The feeder was only about 6 feet off the ground and seemed to scare the deer. We did not keep corn supplied constantly so the deer never really got accustomed to the feeder.
Dad and I tinkered around and ended up with a system that has worked great for us. We start out with some 5 or 6 gallon buckets and add one of the programmable feeder kits. They run about $40 dollars but will save you that much in corn in 2 weeks. The whole idea is to hang the feeder so high in the tree the deer don't notice it is anywhere around. We use a light chain to hang a pulley on a limb and then hoist up the full feeder with a rope. a 6 gallon bucket will hold a 50lb bag of corn. We set the timer to feed at 6am and at 6pm(adjust for daylight savings). We are only feeding for 4 seconds at daylight and dark so 50lbs of corn is lasting close to 3 weeks. The trail cameras at these sites have actually seen an increase in daylight activity because there is a minimal amount of corn available during the day.
The deer are also relatively calm when feeding in these areas because the corn is not piled up. The feeder slings the heck out of the corn because it is 15 feet above ground. It is also nice that you can stay out of an area for 3 weeks in between refilling. This really keeps the pressure and scent down.