Tom McCloud wrote:

Second answer is a question to our Canadian members: you know the
definition of kayak disease at it applies to the Inuit?

Are you referring to "kayak angst"? It's a form of vertigo that can
occur when paddling in fog, darkness or other conditions that make it
impossible to visually distinguish the water's surface. Your brain loses
all spatial orientation. Fortunately, simply creating ripples on the
water surface with your paddle is enough to "break the spell", so to speak.