There is a new restaurant / bar soon to open called "Dox On Winnisquam". It is on the water on route 3 directly across from Jay's Marina where all the pontoon boats dock. It is accessible by boat as well. Should be a welcomed addition to those who boat on Winnisquam.
https://www.doxonwinnisquam.com/
Dan
Edited to add, there is a lot of good pics on their facebook page...