At the end of Ocean Ave in Fairhaven is a nice ramp that dumps you into Nasketucket Bay by West Island, see pic. With your boat no tide issues. I have launched the BeeReel there quite a bit. Not too much congestion any time of day.
There seems to be one in Mattapoiset (
http://www.brownellsystems.com/boat-ramps.html ) but Google view doesn't show much parking.
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