I would set up over the feeder with the wind in the right direction. I've never noticed any improvement when using attractant scents, but I'm sure they've worked for other folks. Calling can work, but if I were you I'd just be patient and see what comes to you the first several times I hunted the area. If you aren't getting the results you want then I would start thinking about scents, calls, etc. Good luck and let us know how it goes.
Walk the night, travel light, cross the Rio Grande
Someone strums a mandolin, soft gulf breezes blow
My new life is waiting in old Mexico
-Robert Earl Keen