My new coyote system is working. I am using the Foxpro Spitfire, the Elusive Wildlife Technologies XLR 250 Gun Light , and gen 3 night vision. I put the speaker about 150 yds away, sometimes two or three hours before dark, letting the sent decrease. I use the night vision to see them, then turn on the light and with the Z5 set on five power, I send them a 55gr 243wssm. In shorter ranges, I use the 10/22 with 22lr. This has got to be helping the other animals. Last nights dog was huge and in my own pasture, too.