Please settle our difference of opinion. I replaced my cabin sole last year. My sailing pal asked me why i refinished the bottom of the sole as well as the top. I told him it only made sense to protect all sides of the sole. He says its completely unnecessary to put a finish on the bottom..."it's teak, after all!"Can anyone give a definitive answer on this subject so we can move on to other, more interesting arguments?Thanks, mates.Jeff