Some supplemental braking systems are adjustable. I have a BB Classic. Depending on the sensitivity, it actuates on the rate of deceleration. Once the rate of deceleration has decreased, the BB stops applying the brakes. On my MH & TOAD set-up, with the sensitivity is set to 4 with the 3150# TOAD, the brakes were applied, at the most I've observed, for 4 seconds during a REAL panic stop. When the BB Classics actuates the brakes, they are whole on, but I've never seen the TOAD wheels skidding. The newer BB have proportional braking, but I don't know very much about them. Hope this helps. JM2¢...
Ted Fulltiming in the DreamCatcher a
2008 Challenger 371PE on F53 w/ 2010 Cobalt
R'V there yet?