OK, Pictures!
Here's the back 1/3 of my full tonneau. I've had it attached and zipped up covering the whole cockpit exactly two times in twenty years. The top is stowed underneath, along with a custom holder for my side windows (that looks like a really big wallet with separate, padded compartments for each window). Once stowed, you'd never know there's anything in there.
A shot from the passenger quarter side. It has a velcro closure so I can fit it around the roll bar and close it, then snap it to the body.
It has pockets for the head rests which just fold down as shown. The remainder of the tonneau is folded up and then tucked under to sit on the rear seat, forming the front wall of the rear seat area. You can also see the Velcro at the bottom of the roll bar window (which keeps the rear wind buffeting at bay). The frame around the roll bar window is the same channel used in car doors to hold/guide the door glass up and down. It comes in 6' - 8' lengths at auto glass shops.
This is "Industrial Strength" Velcro but it releases pretty easily, all things considered. Get it started and then part it along the length with your finger - Zip!
All in all, the Tonneau used this way has made for a really nice, finishing element to the car.
