What is the most profitable thing a hunter can do in the month of March in terms of preparation to arrow a mature buck in the fall?
Last month(February) the concensus was shed hunting while covering/learning your ground better, and trimming shooting lanes out.
Scouting new ground:
In my neck of the woods there is usually still snow on the ground until March, so seeing sign such as trails and scrape lines can be difficult on new and unfamiliar ground. Hence March is without a doubt my favorite month to scout out new properties once the snow is gone for good. If a potential stand location is found I may do some light trimming but am careful to not take out too much. Unless you run a trail cam in the area I see no reason to step foot in these woods again until you put your stand up in late summer/early fall. When my stands go up for good in late August the shooting lanes will get the final trim before the season gets underway.