So my wife booked the two of us and our 7 and 8 year old daughters on a great rafting trip with some class 3 rapids. There was some guy camped out on a point taking pics with what looked like a 70-200 f/4. We got his card at the end and it looks like he's hooked up with over 90 outfits that float the river. In one day alone he had 90 groups' boats go by, each with about 5 rafts. It would get pretty monotonous, but it seemed like a pretty killer summer gig for a photographer - especially someone who hated doing weddings. I'm not sure what he makes, but his shots look pretty good for what he's marketing - I thought I'd share 
Here's his site
, if anyone's interested.
