Finally got it loaded on my notebook and it saved my bacon today. Gen3 slipped out of my hand loading the boat yesterday in pouring rain and hail and hit driveway from 4 feet up. Hoped for the best, got the worst, wouldn't even fire up, but was able to track where I was and use the contour lines to at least have a clue where we were and how deep.
Found a honey hole for sand dabs, loaded up and headed to Double Bluff @ 11:30 for the last hour of a nasty outgoing tide. Unfortunately we didn't find any Lings but my Norwegian partner has a gob o' sand dabs for dinner
Thanks for the offer Rob.