I am assuming that right now you are scouting and not hunting (correct me if I'm wrong... I know some seasons are fixin' to open up).
First things first... don't get to calling and decoying and all that mess until you are actually hunting. No need in educating those boys during the off season.
Second... there isn't much vegetation or ground cover for a man to hide in this time of year... so 100 yards in most places might as well be 10 feet when it comes to a turkey being able to see.
If you have a group of gobblers now... you likely won't have a group of gobblers much longer. They get onrey this time of year and get to fightin amoungest themselves and split up to go do what boys and girls naturally do.
Where are you located statewise? Knowing what sort of timeline you are on with your season will help us help you a bit.