Well my recommendation is not exactly in the lakes region, but..I am a self confessed lobster aficionado. I'd challenge anyone in the Lakes region to try and beat the lobster roll at Reds in Wiccasset, Maine.
This is the standard by which I judge lobster rolls. Indubitably, the best lobster roll on the planet.
http://www.urbanspoon.com/rph/207/14...our-line-photo