I used to use looks/road cleats on my bike many years ago, but after i had my back surgery, i found that I could feel it in my lower back when clipping in/out. (its quite a twisting movement) I then got Mr Frag to put SPD road cleats/pedals and I have ridden on these happily ever since. He recently mentioned that I should maybe swap back again and give it a go (as I'm now much stronger than I was post-op), but what I want to know is what is the benefit ? is it improved power or something ? I'm a believer in 'if it ain't broke don't fix it', so wondering if its worth doing ??
there is only one *big* hill on the course, which hurts like hell when you've got 80+ miles in your legs! the first half of the course is fairly flat - i.e. there are some pan flat bits, and quite a lot of undulating/rolling terrain as well.
as for the swim - its 50/50 wetsuit/non-wetsuit so far so don't do what I did and assume it'll be non-wetsuit and train for it, then get a bit of a shock when it isn't