If you're retailing quilts, display them properly, rather than with clips and pant hangers, etc. You'll find that it shows them off better to your customers.
YOu can do tiered quilt rods on the wall, so that a good part of one quilt shows with the next one in front. Just be sure to have the rods further from the wall, the lower on the wall they are. Think of an oversized towel bar that has more than one layer on it.