The new Prodigy P2 brake controller did an amazing job. I turned the overall power down when I left the pavement and tested it on flat dirt to be sure I was adjusted just below locking the trailer brakes at maximum braking. From there I never had to touch it. The P2 has a triple axis sensing so it adjusts the braking power if you are going up hill or down. Even on the loose shale I was able to bring everything to a stop without the trailer locking up and trying to pass me.
For anyone running a an electric over hydraulic disk brake set up I highly recommend the Prodigy P2.
Edit: I have had some questions about the electric over hydraulic braking system. Here's a bit more detail.
Your electric brake signal actuates a computer controlled hydraulic servo motor that generates hydraulic pressure driving normal disk brakes.
Here's the US based company that made my system for the Karavan:
http://www.carlislebrake.com/products/trailer-brake-actuators/
Mine is the HydraStar 1200
Typically they are on heavy trailers and 5th wheels but they work extremely well for any trailer application.
Here is the website for the Prodigy P2 controller:
http://www.tekonsha.com/content/products.aspx?lvl=3&parentid=0&catID=1435&part=90885
It also saves you a ton of money on underwear changes. :elkgrin: