Yep. I've learned over the years that rating has little to do with risk of capsize or injury. Matter of fact, I could make the case that lower class water is more hazardous because we let our guard down. I can't count how many class II near flips I've encountered thinking it's just a big riffle. And I'm thoroughly convinced that scouting is more likely to produce injury than the rapid. Poor landings, steep climbs, hopping wet boulders, poison ivy. I pretty much wear my helmet from camp to camp on small rivers, and keep it handy for big.After several years of going down the Middle Fork Salmon and wearing my helmet for the class IV rapids this year I learned a hard lesson. Low water class III not wearing my helmet....been through this rapid several time and find myself having to go around a stuck raft. Long story short, spun, glanced a rock and I see my wife launching off the side of the boat, split second later the frame cracks me on the head, splits my head open and I bleeding like a stuck pig. I was lucky I didn't fracture my skull or was knocked unconscious. Wearing my bonnet from here on.