In 1986 jump ramps were all the rage. Easy to build, portable and fun to launch off of. Unfortunately, decks were snapping left and right. Powell-Peralta deck returns were so high the company sought ways to make decks stronger and more resistant to jump breaks. One solution was Bonite construction. Another was the "Gee-Gah" shape which had bumps to reinforce the break zone area. Why "Gee-Gah?" Ask Chris Iverson. This shape was also used for the Skull & Sword graphic. They were originally produced between 1987 and 1988.