The video below will show you where and how you complete ALL 50 of the Monster Stunt Jumps. When you have completed them ALL successfully you will get the 'Show Off' Achievement. Completing the stunts is also required to reach 100% game completion. The best way to do this is to play as Franklin he has a special ability that slows down time while driving which is useful for a lot of the stunts. The best bike to perform these stunts is the Pegassi Bati 801 but there will be times other vehicles will be required (just select the same type of vehicle that is shown in the video). To perform a successful stunt you must land in the specified area. It is advised that before you attempt a stunt you quick save the game so that if you fail you can reload the saved game and be in the same position you were in before the stunt, doing this will prevent you from losing any progress if you die or destroy your vehicle.