I only took one class thru the county Rec Dept. one year with my male Dobie, otherwise, I just worked with my dogs at home at the start of our walk. 5 to 10 minutes of training then OK and let the dog enjoy itself. Pooch was taught a few hand signals also. In SAR, one of the CARDA people we went to see that were a couple hour drive away, complimented my dog and I, said we read each other well, this just by his brief observation.
Duane