When the Utopia Backrest if folded forward, how much of a protrusion is sticking up above the seat? The reason I ask is the my wife with her bad back has to get into the passenger seat sidesaddle. She sort of slides up on the passenger seat and then swings her right leg over the front of the bike. Then I get on. Would the hardware of the seat get in the way of her swinging her leg over the front of the bike?