I like to cover the prize before the owner picks up their car. When picking a cover, don't go the cheap route. Most often those cheapies have abrasive material that can scratch the finish. Make sure it can breath, and is washable. Rule of thumb, expect to pay around $100 for a decent one. The ones that can be used outdoors will run more $$$ because they have to repel the sun and other out door contaminants. Gary
