I hunt turkeys with a bow, so I can be out there all season long. It seems like when it comes to calling turkeys in it is hit or miss, depending on the day and your area. I don't think any season is better than another, unless you're hunting a heavily pressured area as the birds may become call shy. I have many times called birds in after 10am, because they have bred hens and are out searching. I was with my uncle last spring, and we watched a tom breed a hen around 9:30am. Immediatley after the tom was done, we called him in and he came running! One thing is for sure though, scout and hunt hard and you'll most likely get an oppurtunity.