So, we rented ATVs (Honda 250 Sport Quads) at the Oceano Dunes over the weekend as part of the bachelor party activities. I must say that while riding around in the ATVs was a lot of fun, it's actually a bit scary at times.
For the most part everyone who hadn't really been on one before started off overly cautious since the sand dunes were pretty damn steep at times. But, after a little bit of taking on the various drop-offs, everyone would get a bit too confident. Not long after you enter the stage of overconfidence, you'd pretty much get jacked in one way or another, and you'd revert to being cautious.
I think most of us got messed up at one point or another, and I'd say that getting hurt on one of these vehicles is probably not uncommon. At least two people got completely thrown off their machine, and one guy had the ATV roll over him... I'm surprised he wasn't seriously injured. Several of us banged our helmeted heads into the handlebars after being jolted around after catching air. At one point I managed to slam my leg into the side panel so hard that the fairly thick plastic completely cracked. My leg got really bruised up as a result of that.
Anyway, my opinion is that the activity is definitely dangerous, and I wouldn't necessarily recommend it for everyone. But, maybe this means nothing more than the fact that I'm just a wuss.