The Arkansas Fall Foliage Trip helped me dial in my settings for the brake controller. On road I keep the Boost at zero, but turn the max voltage up to 12.0V. On gravel and dirt forest roads, I turn the max voltage down to 9.0V, and keep the Boost at zero. When traversing the trails (i.e the nastier stuff), I have not found an ideal mix yet, but I'm thinking that a max voltage of 6.0V with the Boost set at level 1 will work well. I will test this hunch on the next trip.
I also found my limitations with the trailer on the trip. Of course, the trailer makes hill climbs much harder. The additional drag of the trailer will also make me more vulnerable to getting stuck in mud holes.
... but it sure is nice when in camp. I can bring all the gear I want (or she wants), and keep the truck relatively free of gear... so I can unhook and play in the tough spots I find along the way!
Photo courtest of LaOutbackTrail