The solution l found, was the sit on kayak (a measly 150 quids) which worked to admiration till the day l sold the tub and it still does serve as a recreational vehicle.
One needs a good dose of lateral thinking to come to this solution and it worked for me.
The other, SectorSteve's solution is a way as he had similar problems, though, mixing oyster beds and inflatables of any sort could cause a disaster, the sit on kayak is solid, buoyant and light to carry. Perhaps not wearing Vietnamese safety shoes

, of course, but a solid pair of sneakers like the Dunlop volley?
It is almost undistractable even on oyster beds and easily repaired using epoxy.
Riding against wind, tide, currents, eddies is a breeze wearing an inflatable pfd.
I carried agm batteries, fuel, supplies, wine, beer and spirit reliably for years and it fitted the bimini frame to perfection.
