I don't think there is one right way or even a way that works most of the time. Everyone that has hunted spring turkeys for any length of time has experienced "henned up" toms and they can be quite frustrating. I'll give you a few scenarios that I have experienced and the rough approximation as to how often it works out successfully...
1. You can be quiet and let them filter away and if you have a good sense of where they are going you can sneak to another position and set up there. 20% success, higher in the right terrain though.
2. You can call softly and try to peel the tom away, although this has worked VERY rarely for me. 5% success, although it is slightly higher if there are multiple toms on the scene.
3. You could call aggressively to the hens and hope they come in for a look see and drag the gobbler with them. 25% success.
4. You can lay down and take nap and wait until about 10:00A and start calling again. 60% success, plus a good nap!
I am completely convinced that I have multiple times watched the same tom ignore me at 6:30A or so, only to get his blowed off sometime between 10:00A and noon. I have said for years... "one gobble at 10:00A is better than 50 gobbles on the roost."
I one time snuck up on a gobbler that I could see on and off in a pasture about 200 yards away. I watched him breed the hen he had been dogging all morning and then he gobbled once and headed my way. I am convinced once he finished his business with his lady friend, he set out for the lonely "hen" he had been listening to on and off that morning. Unfortunately for him... he didn't make it very far... BOOM!
Stay patient, you probably aren't doing anything wrong, it's just how it goes sometimes. You are better off to set up where they want to go, not necessarily where they are on the roost.