Great job RG! When I was a kid, (still am) I use to hang out at the Laconia Public Library and read all the old books and documents on the area. I remember reading a booklet that document a finding that there was a natural dam across Lakeport at one time. The water use to flow from Alton Bay to the sea. I'll see if I can find that booklet and see if I can make photocopies. It contradicts what you read about the lake level. It says the hill on Rattlesnake Isaland was just about the only island. Due to bad weather, I have a little time on my hands.