First of all let me say whatever you do DON"T go out, and use your turkey calls scouting. It alerts the Tom's to your calls using, and often causes them to hang up or not respond at all.
As far as scouting I think its a must before season opens. I like to go out at dawn, and just listen to where Tom's are roosting, and gobbling from. I then try to move closer to them, within 100yds is plenty. I try to see where they fly down, and which direction they move to. This will tell me where to setup. If I can't go out at dawn. I go near dusk, and see where toms fly up. If I go out, and don't hear any gobbles naturally I'll use a crow call or Owl hooter to spark a gobble. Anything along these lines to help locate roosted birds helps you pick setups.
As far as daytime scouting I may glass fields from a distance, look for dusting areas, and scratching areas where feed. Droppings under tree's are a good sign of a roosting tree. Feathers, wing tip drags can indicate a Tom's strutting zone. All these can also give you ideas of setups. Hey its all part of the fun, Good Luck & Enjoy!!