Heading to the Rockies for 5 or 6 weeks.

I don't know how anyone could tell that I was not using tow/haul by what I wrote. I always use tow/haul but I prefer to stay ahead of excess speed by shifting myself. I have a selective shift 6 speed and was able to use it without hitting the brakes unless necessary. Without hitting the brakes, the tranny will not know there are sharp turns ahead that I can control most of the time with my shifter but had to use the brakes more than I like as reported in my original post.
I was raised by a truck driving father who taught me how to drive a manual and automatic tranny on hills and when pulling loads. Considering that he was a trained driving instructor, I think he did a pretty good job in teaching me how to drive.