Found my old CAD ideas for the anchor cover so thought it easiest to upload them. Hope this makes sense as I've included the wireframe and rendered versions.
The U bolts (in red) were secured through an upstanding bulkhead/strengthener similar to the one in Matt's photo. The rest of the triangular flat surface slid on top of the rest of the hull but underneath the tubes
Great post, at the moment i've got mine in a plastic bucket and yes, sometimes it flies !
I like the idea of an old sports bag, i've got loads of those lying around. The problem being is that it's going to bring loads of water into the boot of the car when I take it out for towing.
The fish case seems quite a good idea too as I could put it sideways on and it would contain my parachute at the same time. It would also let the water drain.