There is a rule of thumb that altering a boat design more than 10% up or down will create more difficulties than it's worth. If you do what you plan you will have an entirely different boat with unknown handling characteristics. Shrinking a 17 footer to 11 feet will greatly increase the rocker which can only be remedied by changing the shear line which means the deck will be different and on and on. You're also decreasing the carrying capacity by 30% or more.
Why not get a proven design of whatever length you want and build it as drawn?
Charlie

: I am trying to modify the Great Auk from 17 ft to 11 ft. If anyone can walk
: me through the conversions I would greatly appreciate it. Or does anybody
: have end form offsets for the little auk that I could use. I am not
: understanding the eqations because I do not understand spreadsheet
: functions and I am not getting where I should put what numbers! Help!