This is the time to do some serious weight training- it'll really show up in the spring! And a trainer has some benefits, Spin is very structured and all but it trains you to ride for is 50 minutes and you need two and a half hours to force that metabolic change that outside makes. Grinding that out in front of West Wing, Law and Order, then the news is a pain but if you can pick two nights to do tv or double movies you can go into the spring strong.
Racers, especially pro's do this. Leigh Donovan used to ride rollers with a stack of video. I never had to do this much, but our good weather is just starting- I'll think of y'all when I'm in short sleeves in January.
We do pay for it in August though. That's the off season here.

Lizzy