WAVERIDER wrote:
Loaded kayaks, as long as they are within capacity, often ride a lot better than empty ones. Less twitchy and you can adjust the trim better by choosing whether weight up front or back. Weight in the back often helps prevent weather cocking (tendency to turn into a crosswind)

Weight in the back is OK up to a point.  Mostly the boat needs to be balanced so it rides on its "lines".  If the CG is too far back or forward, this will lower stability , make the boat less responsive to the helm and slow it down (particularly if the nose is out of the water at cruise speed).  
The Revo 16 shown above, looks good in the water.  Bulky items are in the cargo well and heavier items are stowed low and forward for good stability and visibility.  
By contrast, this boat was not loaded very well.  Weight distribution is OK, but....

Hobie hulls have hydrodynamic lift so the bow tends to rise as speed increases.  I like to carry a small weight bias forward depending on the boat, speed and load.  You'll find a good formula with experience. 
