Holler up to the sheer, stained sandstone walls as you drop a lure into the blue-green depths-you'll likely catch both an echo and a fish at sprawling Lake Powell in southern Utah and northern Arizona. Two thousand miles of canyonland shoreline frame rocky shoals harboring striped bass, smallmouth bass, and five other species. Take a houseboat with small craft in tow. When the bite slows, explore side-canyon cliff-dweller ruins, tour the Rainbow Bridge arch, or swim and water-ski. Spring and fall produce the better fishing. 800-528-6154; www.visitlakepowell.com.