Gman, you jogged a memory loose. I rode a supported tour on teh Blue Ridge Parkway (which has some hills) a few years back. One of the riders lived in Florida (which doesn't have many hills). His training was to ride up a bridge over the Inland Waterway, loop back under the bridge on a bike path, and repeat. And repeat. It must have worked, because that 70 foot climb did get him ready for 3,000-7,000 feet of climbing every day.