Having played at DII level back in the 70's in the halcyon days of the Wing T, hated playing against
teams that ran the scheme (Parseghian's teams ran it well).....The Wing T was built around a series of plays that began with nearly identical backfield action: buck sweep, trap, waggle (play-action pass), & counter. The offensive line, backs, and quarterback showed the same initial movements. Defenders often couldn't tell whether they were seeing a sweep, trap, counter, or pass until it was too late. It created hesitation & defensive football is about reading keys and reacting quickly. The Wing T intentionally corrupted those keys.
Love that offense - can never figure out why it disappeared......????