My advice, don't worry about calls at first ( maybe cause i suck at it), to me a call or decoy is a backup plan or a tool for closing the distance. Scout, scout scout!!! Know where they are and where they will be at what time. If you can be in the right spot when they want to be there, a 5 yr old scratchin a couple yelps on a 10 dollar box call can look like a pro. The best caller with the best call in the wrong spot will come up empty most of the time.