As a touring sea kayaker I look for a boat that paddles easily and doesn't need a rudder. I then have a rudder added. To me rudder is a misnomer, most of the time I use it as a trim-tab to trim my boat such that I can paddle a straight course with minimal corrective strokes.
Most of the time my trim-tab/rudder is fully retracted and on many trips is not deployed at all.
Sea Kayaker Magazine