When I opened Skip's Spot page, it showed his position as just outside the
channel off Maidstone Park, LI.

I went away and left it running and when I came back his position had
radically changed to show him only 1/3 of the distance from Plum Island to
Maidstone Park, all his fixes changed from when the page opened!

Spot's web page is screwed up....and, obviously, cannot be trusted to
render properly.