I saw an article on the boats this company produces and they seem to be a comfortable alternative to other fishing boats.
Here is the link to the main page:
http://www.nativewatercraft.com/fishing/fishing.cfm
They also have a kayak paddle boat hybrid called the multisport that can have a human powered propulsion motor called "Propel"
http://www.nativewatercraft.com/features/propel.cfm
However the multisport kayak can also mount an electric trolling motor in the same location.
Charles river canoe and kayake even has some of the native watercraft boats for rental and sale.
http://www.paddleboston.com/paddle_shop/kayaks-fishing.php