Length

LENGTH - OR IT'S NOT WHAT YOU'VE GOT IT'S HOW YOU USE IT.

While we spoke about short boats having lower theoretical hull speeds, we shouldn’t get too hung up on length (although I know a lot of my male brethren struggle with this).  Yes long boats have a higher theoretical hull speed, but we should remember that this is proportional to the square root of the length not the length itself. Theoretical hull speed is also not an absolute barrier. It’s just the speed at which drag increases due to interference between the bow wave and the stern wave. Olympic kayakers routinely exceed the theoretical hull speed of a K1 buy about 70%.

 Theoretical hull speeds also relate mainly to flat water. In the real world, on the sea, having a boat that fits you well and being able to manoeuvre it in rough water to catch those little free rides powered by wave energy will see you pushing along just as fast as the longer less nimble boats.
I have to say it again, GET SOME TRAINING and learn to use the oceans limitless energy to your advantage.