When it comes to hills I've had a go at the cadence thing and am convinced for me on smaller hills it is much better., but what about the bigger ones. We have some near us I am dying to tackle but want to get it right. I have been told only to come out of the saddle when I really need to,but when do I know when to go for it, too soon and I get knackered after only a few peddles, but too late and I could come to a grinding halt. Also I do quite a lot of Xbiking, (like spinning but apparently harder!) and we have 3 basic positions, sitting standing and hover. I have never tried to hover while out on my bike as I am not sure when it is appropriate. Is is more for road bike users as I have a MTB??????