Thank you all for the advice. I'm eager to try the two calls at once plan. I also like the idea of hunting them from higher ground. The only issue with that is, at this particular spot the mountain is pretty bare, and there is a road at the base of the mountain which would be in the line of fire.
In reference to the scouting (locating roosts), the area is public land 3 1/2 hours away. Due to obligations I can't take any days off to scout at the time
. I have used deke's in the past, but to no avail thus far. Thanks again for the replies everyone, and I look forward to any other tips you all have.