Largo is closest to Clearwater. Country Quilts & Bears is located there. I've not been to that store so I can't tell you anything about it. Here's their website:
http://www.countryquiltsandbears.com/
You may also want to check out the Florida Quilt Network. They have lists of quilt stores throughout the state.
http://www.floridaquiltnetwork.com/shops.htm