Would you have the room to flake the rope into a bucket and secure by putting the anchor and buoy on top? Could you wrap one of the mats round the anchor and secure with a piece of bungee? In my case I cant dedicate the bow locker to anchor storage so I have a smaller drybox forward of the the bow locker and I can fit 50m rope, a couple of meters of chain and a collapsible anchor on top and there is no room to move.
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