This is exactly why you hire someone who is a professional in that given region. I myself and am a professional but when I decide to up there and play, I play with a local, that way I am in no way doing anything stupid to put myself or anyone else in harms way. You must respect the power of the river. I absolutely love that section of the calahwah, but you wont see me rowing it unless I am following one of the many local pros there. lots of fun and good fishing. I hope dude learned his lesson. It can happen to anyone.
Peace Superfly