I just recently picked up a started dog named Zip. The problem I have is it sounds too much like Sit. So a few times when he has started to creep, I have said sit, and he breaks. He's 16 months old so changing his name is not an option really. I know I can line him with my hand on all marks as a cue when I release him, but that's not gonna work in the duck blind in all situations. Suggestions?