I'll bow out by pointing out that when a law enforcement officer refers to a "Terry Stop" they are not referring to a routine boating or traffic stop, but specifically to the portion of the Terry decision that allows a pat and frisk during a temporary detention. Very few boating or traffic stops result in Terry authorized pat downs.
As to your continued blanket assertion that random safety inspections violate the Fourth Ammendment, you also continue to fail to recognize that on federally navigable waterways such stops are routinely conducted here in New Hampshire by both the NHMP and Coast Guard, with such actions to date not prohibited by any appropriate Court action.
Bringing it back to the purpose of this website, one point that we can agree on is that on Winnipesaukee the NHMP does not have the authority to conduct random safety inspections, as dictated by appropriate Court decision and by the NHMP's own internal directives.