> What's so hard about getting correct orientation?
> Rather than tying the long rope directly to the unit,
> you attach it with a short extension length to the main rope.
> That way the unit floats directly above the bend in the
> rope, and with correctly shaped package, it always points
> directly up (unless in strong current).
> The fun part will be how well you can measure distance
> to the surface.
> 
> 
>     \SONAR/
>      | G |
>      | U |
>      | T |
>      | S |
>      \Bat/
>        O
>        |
>        |
>        |
>        +------To land line.
>        |
>        |
>        T
>        o
>        |
>        A
>        n
>        c
>        h
>        o
>        r

Not a bad idea.  May have to consider that.
Of course, it would mean making the device float, which
it currently does not (soundly).

Mike H.

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