I wouldn't call 3000 super low. The lines in Westwater are all the same. The rapids between Marble Canyon and Skull have some pourovers, but everything is more or less down the center. Sock it to me is big but I just punch it right down the middle with lots of speed.
Ruby Horsethief is very wind dependent at these levels, especially below the Black Rocks. I've gotten through in 10 easy hours, or 20+ miserable hours if the wind is howling. I wouldn't want to blow through RH in a day, but Mee Canyon or the Black Rocks to Hades Bar is a reasonable day, especially with an early start to avoid the afternoon wind.