Another 2 cents, for what it's worth . . .
We just ran this again, and were a bit concerned at first too, as we had all done this stretch many times, but never above 2,500 cfs.
Turned out to be super fun, just visually intimidating.
The first big hit was at the entrance to Lower Disaster, stay a bit to the left and you'll miss the hole that likely flipped that boat Friday. BTW...this is not very practical to walk around (upper+lower = about a mile).
Harp Falls: run right down the middle to enjoy a desert class wave train! Yes, haystacks! No need to scout, IMHO.
Triplet: left, left, left. Watch out for sneaky hidden holes during the entrance before the dog leg right, as this was where we had the only swimmer on the trip. Did I already say left? It's an easy run if you stay left.
Hells: we entered just right of the upper marker rock, then went left, between the huge tree on the left and the huge waves in the middle. This run worked perfectly. Then back right to avoid more big hits on the left.
Split mtn was super fun, read and run.
Video attached of the HHM scout. The rock at the end of the video is the marker rock.