[alanmcorcoran]

Take off the seat and look at the pillion mounting scheme. With some creativity you can morph the pillion into a support for a DIY trunk. You can probably pick up a tackle box or plastic storage container with a latched lid for next to nothing at a swap meet. Tool boxes, ammo boxes, even small suitcases can work. Search on here - I've seen three or four home made rigs. One used a plywood base as I recall.