get a net and hook the hookes together underneath the passenger seat so its basically attatched to the seat then just take the helmet in and out it stays put high low anything, if you do wheelies the helmet will move forward and hit ur back when u come down but still stays solid...ive always used a net over the passenger seat on my bikes never had any problems...my buddy actually just keeps his net atached to the passnger seat always then keeps the helmet on there and just leaves it as one in his garage...