Be aware that the GPS doesn't work as a compass unless you're moving. It can't give you a direction if you're sitting still, as it uses changes in the GPS reading to determine your heading. The GPSMap 76CS does have a fluxgate compass and altimeter in it, which doesn't require you to be moving.
FYI, raising the boom, while a convenient idea, isn't always a good idea, as it will move the Center Of Effort upwards, increasing the weather helm on the boat and such. Not all that ideal for a smaller, less stable boat.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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Still—DON'T READ THAT POST AGAIN.