Maybe it has nothing to do with safer kayaks. Maybe leave it on the land, about as safe as possible. Safety is knowing how to kayak safely. Know how to do rescues efficiently. I've had two incidents where it was "get it right or someone dies". Dramatic? No. Just doing a 2 boat rescue properly. Very easy to do if you know how. Do you? Fit proper decklines to start with. I presume your decklines are there and all the way round the hull, tension adjustable and of a suitable dimension (thickness).