What is the best shaped boat hull that gives maximum push when the boat has a wind behind it?

We have to make a boat hull design where the boat has sails and wind pushing behind it. What is the best shaped hull for this. Can you please draw it on paint or something and then either email it to rhysdixon123@yahoo.com or put it on tumblr or one of those sites and gives me the URL? You help would be much appreciated:) Thanks:)