I am putting the final strips down on a surf kayak I designed, but i have a problem with my design. You see, somehow i built a much wider stern than I meant (the details are worthy of discussion at another time or for anyone familiar with the "Kayak Foundry" design program) and am trying to think of creative ways to effectively narrow the end of my boat. The boat is 9 feet long and the stern right now ends while still 18 in wide. Right now I feel sure that the wide stern will make the boat pushy and too loose on waves, so I am leaning towards a swallowtail like surf boards have. Does anyone have any suggestions for me? Thanks.