Randallh wrote:

I would be cautious of Upper Black Bar falls and Blossom Bar. Both have
some manuvering that is required. Be sure to stay far right at the top
of UBB Falls...

Yup. Perhaps someone could explain why Upper Black Bar looks so easy
from the top (center looks OK, but it is not!) and even from the bottom,
yet it causes so much carnage. Very few rapids have such a gap between
how it looks and how it behaves.

and hit the gap behind Horn Rock on Blossom.

The move at Blossom can't be scouted (without rock climbing equipment)
but it's easy if you know when to start and where to go, so look at
the Quinn Quinn Quinn & Quinn book for the how-to, or he
http://cacreeks.com/rogue.htm

avoid the "Telfer's Rock" on the left at Blossom Bar.

I thought Telfer Rock was the left-side obstacle at the 2nd S-turn
of Mule Creek Canyon. Easy to miss, but potentially lethal to swimmers
without PFD. Save your wrists for Coffeepot, where speed helps.