So my 66 year old Dad, never much of an athlete, has recently gotten fairly serious about competing in duathlons. Were it not for 2" of snow and temps in the 30s, he would have attempted to qualify for Long Course Duathlon World's this past weekend. In doing so, he would have been riding a 10 year old Specialized hybrid/commuter bike that weighs probably close to 30lbs and puts him in a position that has roughly the same aerodynamic drag as your average washing machine. So - given that he's older, not terribly flexible and not the sort of guy who pictures himself on a carbon P3 that just happens to be my size..., I need some help steering him towards a bike purchase. I know that fit is the cardinal rule, and I will make sure that he gets fit properly. My real question is where to start. I'm actually thinking he may want something more like a 'comfort bike' that Specialized and Trek market to the people who want exercise but aren't enthusiasts. Am I out of my mind on that? It's not an issue of getting him aero, it's about getting him into a better, more efficient position then he's in, on a lighter bike, with as much comfort as possible. Any suggestions?