I think I found a way to keep my car covers on.
I now have my two Cadillacs in the garage. The '66 Plymouth is parked in the driveway and the '95 Lincoln on the street.
I put a car cover on the Plymouth and tried using vise grips to keep the cover on. I clamp the vise grip on the inside part of the rear bumper... put a portion of the car cover in the vise grip and clamp it on the bumper. I think that should work because vise grips can be clamped down very tight since they are adjustable.
No strong winds here for about two weeks so I haven't seen yet how it will work.
'76 Cadillac Fleetwood Seventy-Five Limousine, '95 Lincoln Town Car.