Coming from where you are and given your destinations, have you considered Parker ? I'll guess that with a 25' Whaler the low bridge might be a show stopper but in case it isn't and you haven't heard of them, I'm mentioning them. A link to a prior discussion on the place ....
http://www.winnipesaukee.com/forums/...ead.php?t=3804
FWIW - the traffic into and out of Meredith during the summer can be brutally slow. That's 1 strike against Shep's.