Many years ago, we walked from the Yacht Club to the S/D dock THE OTHER WAY - we didn't have a clue -- and I just remember it seemed like a million miles away - it has to do with how the sidewalks run and where the lake is - it just seemed so far.
In fact, I think it would be quicker to leave Beach Club - go to the Boardwalk and walk to the other end of the Boardwalk and cross the bridge than the way we walked that one time.
Someone may know some better way than I do from the Beach/Yacht Club side, but I don't know of one.