Well said. For first timers hand walking should be the staple. It is simple, effective and it is kind of hard to hurt a healthy dog with walking. As the keeps get more complicated the equipment used incorrectly can leave a dog flat and/or overworked. Hand walking and dragging weight can get a dog into really top notch shape. The risk/reward factor is pretty good.
The hardest part of a keep is reading the dog. The ability to see when enough is enough for today is an art in itself. There is no keep that gives instructions/directions that will fit every dog for every day. A dog may give you 30 minutes of this today but only need 20 minutes tomorrow. The key is to recognize this and not give him thirty minutes when he does not need it or is not ready for it.
I would look to the walking and dragging weight keeps to start with and move to equipment as the experience develops. EWO