Below is a link to accidents reported on Lake Winnipesaukee for the years 2013 and 2014. Click on the dots to get more info. Rather interesting.
42 of 49 accidents were deemed to be some form of operator error. One third of them occurred on Sundays. 33 of 49 occurred when the waters were reported as calm.
see the article:
http://nhpr.org/post/interactive-map...-winnipesaukee