Re: batteries and switches
"..In a 20ft boat two batterys is overkill..."
I don't see where length of boat has much to do with it. I have just as much in the way of electronics on an 18' as many people with a 28'. There have been many occasions when the second battery was a welcome addition. A given electrical instrument will drain the same amount of juice from a battery whether it is mounted in a rowboat or in a 65ft sportfisher.
I like being able to listen to the stereo with just one battery feeding into the system knowing that if it gets low the second battery will fire up the engine and get me home. Overcautious? maybe, but the music sounds better that way.
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