I loved my Magnum, but it only lasted 10 months of not hard use. I bought it used, but with a new warrantied hull by the previous owner. I knew going in that it wasn't something that I could warranty if it broke -- you take your chances.
The rails are a flex point and they'll crack. Riot Warranty told me they fixed that on the new versions (I had an old version) using the outfitting on the inside to reinforce it. I was going to buy a new one, but thought I'd try something different due to durability issues. So far, I wish I'd gone with another Magnum. For my boating ability and style it was an outstanding performer, just a little too weak from a durability standpoint.