I'm not much of a Turkey Hunter, but I went to a a startup function called One Million Cups up here in Des Moines and a couple of guys were doing a launch for their new product called Turkey Fan. It looks a bit like an umbrella designed to look like a turkey. The guy stated it took his success rate with turkey hunts from 20% to 90%+. You can see their video here:
http://www.turkeyfan.com/