I'm a little confused. How is removing2 inches from the center of the kayak improve the speed of the kayak?

: Hi, im about to start a guillemot double and i am thinking about taking two
: inches out of the middle of the boat to make a little faster and make it
: look a little sleeker i figure i would leave the last four forms on either
: end alone as the boat tapers drastically about there i was wondering if
: anyone has tried this or has any thoughts on why it would or wouldnt work

: thanks