The attachment on the boat hook is small and boat hook can be used as normal with it on. Easy to grab the top ring on a mooring and very easy to release. Heavy duty strong hook, so heavy it chipped the gelcoat when the crew dropped it on the deck.
I thought the Grab N Go would solve my mooring pick-up & release issues. It does work easily. HOWEVER... there is some fine print which I didn't read. This device is sufficiently unreliable that you shuld NOT use it for unattended (long-term or overnight) mooring.