I would think, anything that would make a deer more likely to linger, or return would be an improvement. Weather it be a new watering hole, an extra apple tree, acorns, honeysuckle, clover, or corn. Anything growing that supplies food early or late will be noticed and marked by deer. Salt blocks help only during the early season, and some stuff lasts until late season.
If it is economical, I would do it, in small plots, on trails, near water, anywhere the location favors the hunter.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.