There must be some obvious reason not to do it since no one has mentioned it. But I have carried a spare diesel jug in my Anchor locker. It gets padded by two old type IV seat cushions and tied in using the eye bolts, it's doesn't budge. For a short coastal trip, I'll leave my Spade anchor secured on the bow. I have a Danforth in the stern. So there's no sharp anchor bits. The weight of the mostly nylon rode helps wedge it in.