How to jump on higher ground with a jumper (Watch_Dogs 2)

Maybe someone does not know in General if you need to jump onto the roof with a jumper and you dont have jump height,you need to get on the Quad just below the maximum jump height of a jumper and with a jumper first to jump on the Quad and immediately make another jump to the roof.Maybe it's a little difficult,but the thing is at some points very useful.