The other question to consider ..... do you
REALLY want to leave your boat unattended off a Public dock just swinging off a hook ?
On extremely busy days, I simply run my bow to the end of one of the Public docks -- let my wife (and whomever) off and then simply drift well off in the Bay until the cell phone rings ... quite peaceful .... and comes with a show ... watching everyone jockey for position trying to get a slip
.