I like #2. I think if #2 is heeded then the rest sort of fall in order. Be with him and not against him covers an awful lot. Reading the dog during the work is vital. Identifying the need for rest is a struggle for a lot of people. I have always thought ( assuming we are working with a good dog ) missing on the over worked side is far more detrimental than coming in under worked.

I think every day is a different day, and every session is different than the last. An example, we start work at 6AM, and finish at 8AM. We have 22 hours to rest until we work again. Just for numbers sake, we need to work right up until the point where the 22 hours of rest and recuperation is enough. If he needs 23 hours and is not ready at 6AM, he was over worked. If he is ready to go 100% at 20 hours we could have worked a little more. These are just numbers, but that line can be very fine, hitting that mark is an art in itself. Hitting that mark day in and day out over 6-8 weeks creates separation from the rest.

Being with your dog means spending the time to learn this. I think #2 is a thread in itself. EWO