Used kayaks in the mid 70s at Devens but never saw a manual or a sail/kite.
We just paddled our asses down the Arno and Po rivers in Italy or tried to drown out between the cape and Marth'a Vineyard.
Some were hard palstic and the others were a collapsable cloth/canvas and rubber affair on a wooden frame. Taxing my memory here.
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Hold Hard guys
Rick B.
Knowledge is knowing a tomato is a fruit.
Wisdom is knowing it is great on a hamburger but not so great sticking one up your ass.
Author - Richard.
Experience is what you get right after you need it.
Author unknown.