I'll have to draw something up but been thinking about a more versatile rack system when using a canvas cover. Main reason is to be able to use the rack while canvas is on but give it real protection. Probably reinventing the wheel
but here are my thoughts for comment.
1. Front and rear racks, rear removable from tray
2. Rack to have removable pins seen that insert from the top and are locked from beneath so you can put the canvas on then insert the pins.
3. Make removable tailored sections for front and rear that use the pins for location and fixing
4. Example of rear would be a "J" section that would sit on the canvas protecting it from any items that are loaded onto the bar. The "J" would incorporate a high level brake light and reversing camera.
5. Other sections that would hold a roof basket or have extended dropover side profile for a rack mounted annex . Front section could have similar section but with tabs for lights or a light bar etc.
6. If the pins are beefy enough and go into locating sleeves then maybe even a roof top camper could be used.
Have I reinvented the wheel? Comments?