You will see from the drawings yesterday that one of the pictures said ‘rope pull’.  This is a little trick I use to assist me to teach how correct streamlining feels.  If there is a long rope at the pool I often will use it to pull the swimmer I am working with through the water.  I ask them to hold their head up for half a length and then put it down.  I ask them how it feels different once they put their head down.  Since they are going a lot faster than normal the feeling is much more pronounced.  Faster = more drag.  So the goal is to have the swimmer experience the feeling of the resistance of the water by going much faster by pulling them through the water.  It is a very cheap way of doing the same thing that a very expensive tool called a cable tow does.  A cable tow is over £$10K, so a big step down from that fee.  It is also a great deal of fun and then it is very memorable.  Swimmers want to do it again…always a good thing.