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KEMIMOTO Upgraded Roll Cage Organizer...I mounted mine to my back roll cage bar. It holds enough "stuff" and is a well-made "water resistant" material. Available on Amazon for around $55 if you're interested. It hangs down 9-1/2" which does interfere with my reaview mirror somewhat, but not a real big problem. There just isn't many options for extra storage on a Pioneer 700-4 so I decided to go this route. So far so good! (This pic was copied from the Amazon page so not my actual machine...but you should get the idea from this)