Thanks for all the suggestions. I will look into the locking latches for the Lazaret from Fisheries as David suggested. Mike, I hadn't considered the problem of all that grit getting into the mechanism. Thanks for the heads up. Herb, the Dock box rental may save me a few trips to the car, but I was thinking my live aboard neighbors this summer could watch all the stuff I left on the dock ;-). I don't want to lose space by making a lock box to fit inside, but that would likely be the most secure. I read the replies to my lovely spouse and being the practical individual she is suggested rigging an eye bolt in the Lazaret and use a bike lock/cable to secure the item we want to keep secure. If I don't get around to any of the above solutions (or new suggestions), I could just toss some of my daughter's stuff on top and pitty the potential thief whilst he/she rummages around for something worthy to pawn. If that works, Herb may have a visitor comparing our stowage in the cockpit 😛 .