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@chrisch I have to agree with @PfcAJ . With a line, I can tell where I am in the water. Too high, too low, too far left, too far right. Etc. That is a lot easier than trying to follow a computer. More importantly, I doubt you could build one that is small enough to use, and on top of that, zero vis conditions are excruciatingly disorienting for a lot of people, myself included. I shut my eyes, and open them back up every 5 kick cycles to see if it has improved.
as far as people shortcutting, a computer that is capable of doing this would be several thousands of dollars. You have to recoup the cost of building the mapper itself, then mapping, then setting up sensors inside or above the cave, and all of that has to be recouped in the selling price of the computer. Will never get a sound business plan with the cost of doing that which is why the caves haven't been mapped before. More importantly, the cost of a full cave diving gear, plus full cave training, is going to be less than what this computer would cost. Sure it would be a shortcut, but a horrifically expensive one.
Don't take this as us criticizing, the idea is good, it's just the practicality isn't there
as far as people shortcutting, a computer that is capable of doing this would be several thousands of dollars. You have to recoup the cost of building the mapper itself, then mapping, then setting up sensors inside or above the cave, and all of that has to be recouped in the selling price of the computer. Will never get a sound business plan with the cost of doing that which is why the caves haven't been mapped before. More importantly, the cost of a full cave diving gear, plus full cave training, is going to be less than what this computer would cost. Sure it would be a shortcut, but a horrifically expensive one.
Don't take this as us criticizing, the idea is good, it's just the practicality isn't there