We used to raise quail, so any time I lose my wife in a store I give a bob-white whistle. It used to embarass her, actually come to think of it a lot of things I do used to embarass her, but I guess she's learned to live with it. (I got a good one, tell her everyday "think I'll keep ya.")
I'm excited to get the pup and start working with her. And like ya said I'll be the only one to work her so won't matter much what signals I use.
Got a chuckle the other day, I had my big dog Roman at the park and one of my buddies stopped with his blue heeler (they live in town so his dog doesn't work stock.) He asked if Roman knew any tricks I told him no. My buddy then began showing off all his dogs tricks, shake, high five, roll over, etc, etc, etc. Very impressive my buddy would say five on the left and the dog would use his left paw. High five on the right and he would use the right paw. My buddy was very proud, however I got the last laugh. As we got ready to leave I just hollered at Roman and he came and jumped in the truck and my buddy spent another 30 min. chasing and yelling at his dog.
Tricks are neat but I would just as soon have a dog that knows all the basics.