Posted some of the Sebring pics me and a buddy took at
http://cdw27.home.mindspring.com. They are by no means professional or even good amateur stuff, but hopefully you'll find them enjoyable nonetheless. In general, a faster zoom lens is needed -- the Tamron 75-300mm lens borrowed from a friend has an itty-bitty aperture. Add that it's an external focuser and it's clear that sharp panning dusk shots are next to impossible.
Feedback welcome --