Trapping would be the most effective way to rid the coyotes in the area. The problem with calling is, you'd get one, maybe two at the most, sets of calling in on your lease property, and that would be it. I'd guess that the coyotes may or may not stay on your property, but depending on the range of the coyotes, they may only be on your lease property every now and then, so by putting out traps, you would be hunting them 24/7, where as calling them, it would be very hit or miss, and if you called a few in and missed them, chances go way down to call them in again, any time soon. So, I'd suggest trapping, if legal, or hire a local trapper that knows what he/she is doing, that would be your best bet.