Yup, a 'no sit' is not a NQ - Just points off - usually 2-3 points.
Yup, a second heel command during the pattern, if your losing your dog, will help you not lose more points in the long run, providing your dog responds correctly.
Now, for a grey area. I TYPICALLY would not give a 'sit' command on a halt, unless the pattern is full of halts. This is another reason why its so important to watch the pattern before you go in the ring. If there are multiple halts, and my dog does not sit on the first halt, I will say 'sit' and take the points off on that halt in hopes it is a little reminder to sit on the others. Sometimes if you lose the first one, and don't get a verbal correction in there, your going to lose them all. A pattern with two halts during the heeling and then the final can be 6-9 points off without a verbal, or 4-5 off with one verbal.
I also would not give an extra 'heel' command unless I totally lost my dog. If the dog lags behind, but maintains a constant distance, and changes pace with me, without getting lost, catches up on the halts, fasts, etc, let the judge decide what they want to do. Many will only take 3-5 points and let it go at that. Of course if you meet your dog on an about turn, because he didn't go with you, or you finish the pattern by yourself, then an extra command is needed, but that is not the only thing.
If you do give the extra 'heel' command, and the judge has already taken 3-5 points for a bad lag, your adding another 2-3 points on top of it, so make sure it is perfectly timed so the dog responds, and be sure not to do a hand signal at the same time.
To answer the last part of Sailorgirls question.... In reality there isn't much anyone can do to take a deduction instead of a NQ. There are a few things to do to TRY and take the lesser points off, but they don't always work.
On the other hand, there are many things to do to take an NQ, instead of a point deduction. If I want my dog to do better the next time, or I want them to know what they did wrong, when they did it, I'll verbally, or signal my dog to NQ them. This is much more common in Open and Utility than Novice, where many more things can go wrong. Drop on Recall is a biggy that comes to mind at the moment because that is what I'm currently working on. If my dog doesn't look like he's going down 'quickly', on my command, I'll give another command, immediately NQ'ing him, weather he drops or not. Hopefully, he'll drop on the second command, but at least he did not get away with a slow drop that could cost 3-5 points the next time we're in the ring.
Of course this is all based solely on a handlers ability to THINK when they get in the ring! Don't let stage fright or nerves get the best of you.
Edited to clarify that not dropping on a DOR is an NQ. I was thinking of a slow drop, and not a refusal to drop.
[ 02-08-2006, 08:25 AM: Message edited by: Ivoryudx ]