This past weekend I NQ'd my dog in the senior; I know the rules, but when standing on the line, sometimes I don't do the right thing. In this case I was running a fairly straightforward water blind (this would complete my dog's SH); I use a cadence to send my dogs: dead bird, that's it, right there, back. I choked on the "back" and it came out garbled. My dog started forward and stopped about three feet in front of me; if I had been thinking clearly, I would have either given him a verbal back cast, or sat him and given him the cast. I reheeled him (maybe he reheeled himself-I don't remember) and recast him thus NQing him.
I can tell you right now, this is one hard learned lesson I won't forget again. It seems like every time I go to the line I learn something new about myself or my dog; this is why I'm running my young dog in both master and senior stakes although he might not be quite ready for master (but he ran in all three series this last weekend). We're both learning as we go