Sig, I actually use 3 whistle commands 1 is "look at me" 2 is Come/here, 1 long blast is "Whoa". Now the meanings. The "look at me" pip is I have him trained to hand signals. So when he "looks at me". I tell him where I am going by pointing in that direction. Tony my Brit, now just stops at 1 pip to see what is happening. That is something he taught himself. When training like I'm doing now with Gunne. I have the whistle in my mouth. I Say the command a blow instantly. He knows the first 2, but is being stubborn about learning "whoa" he just don't want to do it. I hate whoa posts so don't even go there.......Bob