I've had it on and off a number of times in the couple of months or so I had it on the car, mainly because I wasn't happy with the excessive wind noise I was experiencing from around the windscreen.
First time it was on, I had a bit of a leak when driving in heavy rain, but that's sorted now.
The last time I took it off I loosened all the fittings, so when I refit it, I'll be starting again from scratch so to speak.
Perhaps when I fit it again, and if I'm happy with the fit, I wont have to readjust the fitments.