I would suggest that you take a long look at the Foxpro caller. It is expensive but if you have a big problem and plan on doing some serious hunting this is a great call. Call Mike Dillon (Foxpro Owner) and talk to him.His company has grown over the last 5 yearsbut you may still be able to talk to him directly. He will set you up with what you need. I own one of the older models and it has been worth the $$$$. I wish I could afford to have the fx3 model. It is the cadilac of e-callers.
www.gofoxpro.com