[Paddlewise] shoulder exercises for paddling

A long time ago someone posted information about shoulder exercises 
specific to paddling. I've had 3 shoulder surgeries over the years, but 
was able to paddle somewhat last fall for the first time in several 
seasons. I thought that while it is winter here in Canada, it would be a 
good time to use the exercises for strengthening. Does anyone have a 
good set of paddling shoulder exercises?

John
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