roadbuzz

I dunno. I can't stomach much more than 1 hour at a time on the trainer or rollers, unless I've got a training DVD, in which case 1.5 hrs is about the limit. I mean, this is where I'm going to be spending the majority of my week-day riding until next March... why make it any worse than it already is.
I find that using rollers to do my off-season base conditioning gives me what I need for endurance. Basically, that's an hour every day that I can't get out. Since riding rollers isn't particularly difficult, no need for recovery days. I guess it's the consistancy and aerobic conditioning that yield the endurance pay-off. In February, when I start strength work, etc., the rollers are used for recovery days... still a mostly-aerobic hour.