We have rafted twice before this, once on the same stretch of river and this was the least interesting and most tedious experience. One good thing: Kokopelli gives out helmets for their rafters, which makes it safer. The other company doesn't use helmets, it seems.
Granted, the river was low so there was a bit of start and stop on the trip, but our guide was less than talkative and this definitely made the trip less enjoyable. Additionally, we had two kayakers behind our raft and they were constantly needing attention, which meant we had to start and stop our trip. I wondered why they didn't have their own guide.
Lastly, there was supposed to be food and refreshments on the trip, which we didn't have, but that was a minor point. I would recommend one of the other tour companies if you do this tour.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.