A couple of comments
Ross is right, and your particular circumstances will end up governing what you do. That being said, if you think about what you want the lines to do, they make sense. A long line led from a cleat on the dock behind the boat to a cleat on the boat at the midpoint will keep the boat from going forward. An identical line coming from the dock forward of the bow to the same cleat will keep you from going backwards. Then, a line led straight across from the stern to a cleat on the dock will allow you to pull the stern as close as you want, and a similar arrangement on the bow will work for the bow.I suggest using 3 ply twisted nylon instead of double braided; it wears better and has more stretch. Either splice eyes into the boat ends yourself, or buy with eyes already spliced in. It makes docking much easier.