Thanks for the help on this. I decided to make up a wooden frame from some 16mm ply that I had lying around.

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I routered around the rear edge so that it's a snug fit between the chassis tubes.
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I used a Silverline 300x300 cargo net with the metal hooks removed. It's all held in place with tie-wraps and the resulting storage area is surprisingly generous at around 24cm high by 45cm long and 5cm deep. Access is via the top edge where the net isn't attached to the frame.
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Great for waterproofs, fire stick, etc, etc I reckon.

Last edited by Bunny; 04/09/22 04:49 PM.

Andy