Tll the CSA pilots are very experienced seamen. Without exception, they have all spent their lives at sea, mostly in the English Channel, and all know the fickle ways of the weather in the English Channel, not to mention tides and currents etc.
So obviously the skipper will have the final say on whether or not he feels that it is safe to make the crossing. When on the boat the skipper has the final say in everything appertaining to the swim. Remember, your life is in the hands of these experienced captains. There are many things the skipper will be keeping a keen eye on whilst you are at sea, particularly hypothermia. Hypothermia can be an extremely serious condition and remember we could be six hours from land, which means immediate medical attention is out of the question. Even if we called the air sea rescue or the lifeboat, we are still a long way from land. The skipper will always err on the side of caution. After all your life is in his hands and, come to that, anyone else who happens to be on board.