yeah - my crew thinks it's funny (or annoying) how I keep reminding them to screw the lid back on immediately after opening a port on the water. My girlfriends thinks I'm being obsesive but I've had to cover those things with duct tape after they go swimming far too often! I finally drilled a hole and attached it with a small string. I've got the smaller ports so I don't have the breakage problems but I feel your pain.