I doubt I will be out on the MTB tonight as planned... Gale force winds, too dangerous!

Rollers it will have to be then... what sort of sessions do you do on the rollers Daz? I am out of my depth on them, as to me they only really provide me with a warmup and cooldown tool for (track) racing? I am building winter base miles, started last Friday so anything equivalent to a 2-3 hour road or MTB ride would do me...