The best thing you can do to up your odds Jdog is to do lots of scouting. Then set up in areas where the turkeys want to be. If you get behind them you will never kill one, get in front of them or better yet in between where they are and where they want to go......you will be bustin birds in no time.
Find their roost trees and their travel patterns to where they go after leaving the roost. Then set up in between along one of their travel routes. I've killed many turkeys this way and never even hit the call.
But there's nothing more exciting than calling a big ol tom in to ya and making him want to come to you, just the satisfaction of knowing that he came to you because you coaxed him in is a real adrenalin rush!
Get yourself a good call and start practicing with it now.