I see all kinds of stuff in pictures. This thread does not apply to cruisers, unless they are trying to give their cruising buddy a "GO" and beat him back to the dock!! When most skippers put their crew on the rail they find some comfortable spot and plop down there and that spot is generally near the cockpit. Just having the crew sit any old place on the rail is a mistake. You can pick up extra speed on every point of sail and wind condition by knowing which side of the boat and where (forward/aft) to place your crew.My Sail Trim Chart and book The sail Trim Users Guide defines those positions. The little bit of extra umph and edge you get from the correct position would amaze you. You don't shoot ahead like a rocket but there is an increase. On boats I race on, from an instructional stand point, after the skipper has set his sails and the crew settles in on the rail, I always ask the skipper if he's forgotten anything. Most say no. I then ask what about crew position? It is a question I only have to ask once.