I took a very small oar rig down the box yesterday (12' w/ 8' oars) and at that level (@840cfs) it was a lot of fun, but pretty dicey in a couple of spots. below 1000 there is loads of rocks, and very tight channels in yellow banks, dead car, powerline and the bottom of pinball/rockgarden. @ powerline you have to ship your oars, so to me it was way harder to stay in control than in a paddle raft. (i've guided it for 6 years but it was my first time rowing it) in rockgarden there is so much stuff going on its hard to stay clean, and if it goes any lower you have to make the 'northwest passage'-R side to center right-ish to hard back ferry at the bottom, right above the rockfence/ sieve called the three sisters. its a scary move. and i didn't clean it yesterday. (the normal run is R to L ) So basically i would either take a smaller boat, or hopefully it will go up soon, and be less sketchy, and a lot more fun, and a 14' will be the perfect rig.
Oh and there is a new rock(since last fall ) right in the middle of the entrance to dead car that is worth looking at. it makes it a bit harder to make the move to the right. esp. with a wider boat. the race course is fun but also much easier with a smaller boat (12' is great until 1000 and up) below 600cfs big rocks slot is a 3' wide mandatory highside move that disappears as the water goes up.