The song features an instrumental break that is lengthened when performed live. During the band's first few years Eddie Vedder would use this time to climb the stage scaffolding or dive into the crowd. When the band performed the song at the 1992 Pinkpop Festival Vedder jumped from a TV-camera-mast right into the crowd. During the 1992 Lollapalooza tour at the Jones Beach Amphitheatre in Wantagh, New York, Vedder climbed the scaffolding to the top of the entire stage structure during the instrumental break; the stage is over 40 feet high at Jones Beach. When the song was performed on MTV Unplugged in 1992 Vedder famously used the instrumental break to climb on his stool and write "Pro-choice" on his arm with a magic marker.
Live performances of "Porch" can be found on the "Dissident"/Live in Atlanta box set and on the live albums Live at Easy Street and Live at the Gorge 05/06. A performance of the song is also included on the DVD Immagine In Cornice.