When you move it, put it 15 / 20 yds further back in the woods too. Deer don't like to be in the open so much, you will be amazed what deer (especially bucks) skirt around your plot downwind to check it out during the day. You will never see them if you aren't back in the woods a little. Also uses some of the natural cover to cover you a little better, deer don't like human looking things in trees that move.
If they have thinned out in the fall / early winter they switched food sources on you - they are pigging out on the mast crops. Scout and look for sign and hunt where they are and not where they were. They eat 8 to 10lbs of forage a day, they walk around and browse - they don't just sit in one spot and pig out and go back to bed.
In the fall when you find an oak tree dropping acorns with fresh tracks and droppings get a comfortable folding chair, set if downwind, and sit behind a tree and wait. Bowhunting use a stand, but rifle or muzzleloader I like to be mobile and have a little turkey hunting stool I use most of the time. When the acorns are gone they will move back the food plots.
Learn to rattle, do it boldly - like stomp the ground, kick your feed around, make some noise like they are rolling around MMA style, and be sure to grunt at the same time - then be dead still and watch downwind. Could take 1/2 an hours but watch and wait. If one comes to check it out they will be in full sneak mode and you have to keep your eyes open. It really is fun way to spend mid day and a real rush when a buck pops out of nowhere.
Last but not least, good luck. Luck is half of deer hunting, the other half is being in the right place at the right time. The rest of it is just stuff we do to entertain ourselves
