Be very careful of Blue Water Rafting or similar services, particularly if you sit in the front of one of their boats. My girlfriend wound up in a back brace with a fractured vertebrae, and another woman also suffered a painful back injury. I think you can see that I have written a lot for tripadvisor.com, and usually post pretty favorable reviews. This is the least favorable I have posted in my 50-plus reviews. On our trip with Blue Water Rafting on the morning of 31 July, my girlfriend and another woman, both early-/mid-50s, suffered simultaneous back injuries while crossing surf at speed. My lady will take 4-6 weeks to heal, according to doctors at Maui Medical. My girlfriend has no history of back injury and, to my knowledge, neither did the other lady. My girlfriend was taken via ambulance to the hospital. She suffered a painful fracture to one of her vertebrae (T12), and endured incredible pain until medicated on the ambulance. The other lady also went to hospital, transported by her family. Fortunately, her injuries were less severe. Both ladies were seated near the front of the boat. We understood that the ride is rougher up front, but had no idea that, in jumping swells estimated at 4-5 feet high, one could be pounded so severely. (The swells seemed larger to me, but BWR said the Coast Guard reported that range. I have no independent verification.) Landing between swells felt to us like hitting concrete. BOTH LADIES basically fell to the deck in extreme pain after one such drop. (That was the last swell the boat broached.) The crew called base for ambulance, etc., and returned us to Kihei boat launch. Just a heads up that a healthy back is no guarantee you will return safely from one of these trips. That was our experience, anyway. BTW, everyone received a refund, or so I was told. We and the other injured family received refunds.