I can confirm that if you accelerate all the way down the hill, the surge
brakes won't get hot at all.

bumper

"Gary Emerson" wrote in message
...
I can confirm that the cobra surge brake on our trailer was engaged during
a long steep decent. This was on the road from cloudcroft down to
alamagordo. Didn't cause any problem, but the brakes were definitely hot
at the bottom.