Quote:
Originally Posted by rslifkin
I don't see why not. Ideally, you set the GPS point right over the anchor. And then size the warning circle based on how much rode you have out. If you haven't dragged, you can't move outside the circle. If you get outside the circle, you've dragged.
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Point well taken; I'm more thinking of when does a vessel actually hover right above a secured anchor? Answer: when they leave!
Also need to factor in GPS uncertainty; although I don't think that is a major issue, unless the fence is set too tight.