Originally Posted by fstbttms
You might be surprised at how many times customers and others have told me this in all seriousness.
I hear that stepping on a crack breaks your mother's back.
To explain it in really simple terms, usually the best. Consider the moss on my boat. It traps and carries a layer of water abut 0.1 inch thick. Even ignoring the turbulance, that amounts to several hundred pounds of water being dragged along. The turbulance and boundary layer issues are far worse but more difficult to explain. When we raced, a bottom scrubbing happened every Saturday AM.