I ran it once in a raft at about 5K cfs. It'll be faster than at low water, but its basically a float - you could probably canoe the entire reach without getting the inside of the canoe wet. Whatever you do, give yourself plenty of time to hike in Dominguez Canyon.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse