I've already rattled one in the first day of our PA season in the past. I saw a couple gobblers dodging around, then noticed a buck messing with them. Binos up and it was a decent eleven so I called (grunted), nothing, called again, nothing so I tickled the horns and he came right in, dropped him with a Easton shaft.

I usually try of and on thoughout the season until I know for sure they're responding. As soon as I get a reaction from the first deer, I use the bag on a regular basis.

Your about 2 weeks to a month ahead of us hear in OK so I would definately rattle. The prerut should be in full swing there. I would try it.