[RKDinOKC]

Since trained my golden to be a retriever, whistle once, she stops and looks at me for direction. Two oe three times and she returns. While retuning can whistle once and she stops again, then can send her off in another direction.

Could whistle myself worth a darn before I started trainin her is why I commented that I used a dog whistle, then found just whistling more convenient.