There were a few models back in the day with more turned up and/or rounded tails than normal. I specifically remember seeing old Olin Mark IVs bouncing around ski swaps back in the day. A far as I know a lot of the time they were marketed as mogul skis, with the high tails helping to keep you from getting hooked up between turns.
The original K2 Poacher may have been the first of these marketed specifically as a "trick" ski and not just a variation on a mogul ski, though it wasn't super successful. It wasn't until the original Salomon 1080 and the first Lines that "twin tips" became a legit part of ski culture. That was really when brands started specifically marketing and building them as jump/park skis that were intended to ride, take off, and land backwards.