Walking your poop shooters....
I just got my 2 year old GSD and 12 year old Dutch Shepherd back from a board and train program. The difference is night and day. My main objective is off leash trained so I can walk and take them on hikes, fishing, whatever. The training uses an e-collar which is amazingly effective. When I first heard about the collar, my brain immediately thought "shock collar". It's not like that at all, it's more like tapping your dog on the shoulder.
The wife and I are still learning how to properly maintain the training and advance both of our and the dogs skills. It was pricey, but it is money well spent in my opinion.