Larry,
I think you mentioned in your bass/panfish DVD that your dad started you out fly casting when you were four! You certainly have tight loops, so it's obvious you've been practicing for awhile.
Other than your dad, who has influenced your casting? Lefty Kreh? Mel Krieger? Joan Wulff?
Incidentally, I have recommended your bass/panfish DVD to several of my friends who were interested in learning fly fishing. It's the best A-Z guide I've seen.
Thanks.
FC