Hi,
There really are no good exercises for relief of carpal tunnel impingement.
One thing you might try is wrist splints at night. They keep your wrists
mildly extended and are some benefit for some people. The only real fix is a
good neurosurgeon to do a carpal tunnel release. Having worked in the
neurosurgery field for over 20 years I've seen a lot of this and a good
surgeon is about the only long term solution. That and if you have carpal
tunnel syndrome don't paddle with a feathered paddle, it will only aggravate
it.
Bub