Tapley started with Appaloosas in 1979, taking four well-chosen horses to the
track. Tapley owned or bred
horses such as Little Lady Oh, One Trash Man, Trash O Matic, Classy Trash and
Bar-T's Man. He served on the
Florida Appaloosa racing board and as president, was a member of the Executive
Race Committee for six years, three of which he served as ERC chairman. Tapley co-founded the California Golden Stakes series and was
advisor to several racing boards for State Racing Association.