Tom Riche and Lucero's Jaws of Working Class K-9
Re: limitations of leash training
Dogs of old (KNPV, IPO/SCH, FR, BR) w/ those same high drives, hard temperaments, hard to correction, etc. were trained w/ LEASHES. All trained to do work away from the hanler (30m and beyond). It can be done, just not alone. Gotta' have a good team. I've seen it. E-collar is less strenuous, I suppose, but all the same rules apply. Just my personal observation vs. your personal observation. I understand what you're getting at, but I think your response goes in another direction. I'm speaking on what the title of your thread implies. Not necessarily on behavior modification and whatever all else you refer to.
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"