OK Now I get it. Rear axle(s)only with the parking brake. So my original suggestion would be valid. The instructor could have meant for more control on snow. Except as I follow the thread he did admit that it was an oversight not a lesson in hazardis braking techniques.
OH WELL, NEVERMIND!
Good Luck and keep us posted please. "Q"
1999 Newmar, Mountain Aire 3768, V-10, CAI, Headers.
"Spending our kids inheritance one trip at a time"