I can't bear the idea of immobilising my Morgan for the winter, I want it ready to hand if the chance comes for a winter drive. All I ever do with mine is leave it parked in the garage with the handbrake off so I can easily roll it backwards and forwards a few inches to avoid the tyres taking a set.
I keep an eye on the humidity and switch the dehumidifier on if it gets over around 75%, and If I've not used it for a few weeks, I'll pop the battery conditioner on for a day or two.
If the underside is well protected with Dynax S50 (wax) and ACF-50 (oil) I see no reason to stop using it through the winter, although I draw the line at ice and snow: they never grit our lane and those Cotswold stone walls are mighty unforgiving...
