i have a large set of cables and a digital starter device that fit flat on the trunk floor under the rear partition when it is in place to allow for the top to be raised or lowered. in addition,i have a pico folding chair (for cruise ins etc) that lies very flat half under and half exposed. in addition a have one of the harour frieght bags with tools,etc that fits in the trunk off to the side with the partition in place so the top can be operated. there is still room for a couple of plastic grocery bags if necessary. nothing flies around as long as you can get the stuff to lay flat on the trunk floor either under or partially under the partition. you just kind of need to play around with it a bit like a jigsaw puzzle to work it all out.