I read you original post and to be honest had no reaction one way or the other. Although the price point seems reasonable for what you're proposing it is not a price point at which I'd buy. I would hazard a guess that all boats that are concerned with an anchor dragging has some type of GPS driven electronics with the requisite alarms, etc. that serve the purpose reasonably well; probably not as accurate or quick as what you're developing but adequate. My opinion would be that your product would be primarily of interest to the mega-yacht captain. Of course, my opinion only. And absolutely not trying to discourage your work, innovation is the way of life now so go for it!