At 6,000 CFS or so the run from Routt access to 6 mile takes about 45 minutes. Really.
At this level paddle boats are probably not a good idea.
Windy Hole is a train of 3 or 4 big but fun waves. Big enough to flip if you don't hit them square.
From there to CowPie and Ofer (Narrow) rapids it's one big toilet flush, nothing big but you will be very busy, most of the time just trying to keep straight and watch for sleepers. The sleepers are from big damn rocks that are usually completely dry.
Cowpie and Ofer are not particularly technical, but very big; stay left. Stove pipe is washed out, with some weird currents.
Making the landing at 6 mile will require a big, strong suicide type willing to sacrifice limb and sanity to jump and get anchored before the rope goes tight, and the island is completely covered; you have to sneak in there at top speed and pray the landing sticks.
At 2K everything big is bigger, everything is faster, and you need to bring your A game or stay home. No sissies allowed!
A swim in anything above 2K should be considered serious; lots of snags along the banks and big bad gnashing sleepers.