Trust me, we've all been there. Turkeys are a funny, wary bird that will give even the most seasoned hunter fits. It doesn't sound like you're doing much wrong. Just unlucky.
It happens to all of us.

I don't know if dekes are legal where you hunt, but it sounds like a deke may help bring the birds in close enough to close the deal. Especially on that road set up you were talking about.

Also, if you can hunt until dark, you may want to try to figure out where the birds want to roost and get there before they do, and bust them in the evening before they fly up.
Even if you can't connect on them in the evening, it would give you a good idea where to start in the morning.

Hang in there!! When you bust one, and you will, let us know!! We'd love yo hear about it.

Good luck,

Slice