On 21-Jun-2004, lcopps wrote:

Since a person sits above the waterline
on a sit-on-top kayak, the kayak is more top-heavy and subject to sway
from side to side. In a traditional kayak, your weight is below the
waterline,

This is not completely correct. There are SOTs that have a paddler in
pretty much the same position as a conventional kayak and it isn't
likely that your CG is below the water line in a conventional kayak.
Picking the recent Nordkapp H20 review as an example, the waterline
is 6" above the bottom for a 200lb paddler with 100lb of gear. That
paddler's CG is likely close to the 10" height that SK assumes in their
calculations. Hence, his CG is about 4" above the waterline.

Mike