Bill Tuthill wrote:
If you get a paddle with proper blade feather for your anatomy
(check out
Werner sea kayaking paddles with totally adjustable feather) and learn
how to paddle from your shoulders with elbows always at the same angle,
sea kayaking should not exacerbate your tennis elbox. It could even help.

No feather at all works just fine, too. Contrary to popular
misconception, there is nothing ergonomic about a feathered paddle.
There is nothing more natural than an unfeathered paddle used without a
"control hand".