As long as you're moving at more than about 40mph or so, you won't really get wet.
If you're stopped, use the car cover. You can even sit in the car with the cover on to keep yourself dry.
Car washes are good places to duck in to.
If you're going to drive very far in the rain, you really need a soft top. With that in place, you won't get
as wet.
Around here, you usually don't get rained on for more than a few minutes. I usually try to just power on through.
