You can do lots of useful stuff on the turbo through the winter - the general advice I'd give (which echoes Cam's comments last night) is keep all sessions to an hour max to keep your sanity intact and ensure each one is focussed. Again as per last night's discussion Tony Williams has lots of stuff on his website at
http://www.flammerouge.je. Useful stuff from my own personal collection includes:-
-Leg strength work - basically big gear, low cadence stuff to build strength and muscular endurance. Nicely summarised as Muscular Endurance Intervals at
http://ezinearticles.com/?Top-5-Cycling ... id=3252462.
-Leg speed work as part of a sprint training programme. I must have told everyone on a bike about the LVRC magazine drills but I'll briefly repeat:- two one-hour sessions a week, first week an hour of 15sec prints / 15sec recovery, second week 15sec sprints / 30 sec recovery etc, gradually increasing the recovery week by week and increasing the intensity. It works on the theory that for good sprint performance you need good leg speed.
-2x20's to maintain threshold power while you mainly do LSD rides.
All of the above are "max effort" but they won't do any harm mixed in with long rides. Again as per discussion last night though - the secret's in allowing proper recovery too. And along with that it's probably worth saying be prepared to lose a lot of your peak fitness - you'll regain it (and more) with a period of recovery followed by a good, structured winter and spring.