Hi!
I usually set up my owl deek on a high perch with a cloth crow deek hanging from it's claws. I put the rest of my crow deeks scattered from 5 to yards from the owl (9-12 crows). Then I put a couple crow deeks in nearby low tree branches. I camo my speaker with mesh, and play out the speaker wire to my hiding spot. Keep the sun behind you if possible. Camo everything you have, even your shotgun. Gloves and headnet too. Get as much cover as you can, and leave a 'window' to shoot out of. Play the crow and owl fight, crow distress, or excited crow, and get ready.
Sit still until you pull up to shoot. They see everything. Only move your eyeballs, and camo camo camo.
Hope this helps; I busted 72 of 'em last year with this set up at different spots in southeast Ohio.
Rudy