Additional info!! We did a one day Swiftwater course earlier in the year, so he has done a bit of river swimming, although that was in the Pinnacle Rock area. He was with me for a Middle Fork trip in June and we've run the Royal Gorge, so he has experienced big water, but he was on the raft. I haven't been down Browns in a few years and that was on a comm. paddle raft. I've never had my oar rig through there. I will be in my 14 ft oar rig, so I guess we can always roll it up if needed. Maybe I'm just being over cautious.
Thanks for your thoughts