> let the float go, get a fix and reel it back in. Any decent
> GPS will give you
> bearing and distance back to the origin point ie the dive boat.

I don't think my magellan gps will give good bearing information at
swimmer's speed - I have to get the boat moving for good data...
>
> If you were marking a position under water for an object
> release the float,
> get the fix, real it back in.

This is an excellent idea....

>
> A gps antenna is pretty small so the float isn't going to be
> that big which
> means the cable isn't as big/strong etc etc. No reason the whole thing
> wouldn't
> fit on a coffee can sized reel
>
> Simple, cheap, and no need to reinvent the wheel, ie you
> could build it
> tonight
> and try it tomorrow. ;-]

Except I'mnot ready to take my gps underwater. I remember spending months
perfecting an enclosure for my dive computer - I had to do many rinse jobs
on the board during all the tests that leaked...

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