I've had the opposite experience, except it really is a PITA to get on/off.
The 82 diesel is under one right now and it's doing a great job of keeping
leaves, pollen and general muck off the nice paint until I get around to
selling the van (anyone? It's a 7 passenger which needs a main seal.
Offers?). Haven't had it blow off, but condensation will form between it and
the paint - leaving dirt streaks behind. The one I have is Tyvek, however,
so the condensation simply evaporates off.

john

>   Here is my experience with any type of car cover on a van: a real =
> PITA! Very hard to put on by yourself, usually blow off during high =
> winds or thunderstorms (even when secured, I've had the grommets tear =
> out). If you live in an area with freezing temps in the winter, the =
> cover freezes to the vehicle. IMHO, not worth the cost/trouble.  Jeff