Two prime examples of how Bruce Lee trapped. Notice the HUGE difference between how Ted Wong utilized the Pak Sao (e.g., link provided by Nick) and how Lamar Davis utilizes the Pak Sao.
Lamar Davis was certified by instructors from all three periods of Lee's martial arts development. They include Seattle Era student Patrick Strong, Oakland Era student Leo Fong, and L.A./Chinatown Era student Jerry Poteet. The Pak Sao and Lop Sao techniques demonstrated by Davis were taught to him by ALL three instructors. Davis clearly is a fan of the compound trapping techniques taught by Lee to students in the Seattle and Oakland periods. As I previously mentioned, by 1967, Lee had abandoned the compound trapping elements of JKD and focused on the single trap & hit.