I am way more of a carpenter than a boatman. I have suffered off and on with this problem for years. No relief from meds of any kind, nor from commercially available wrist braces. A fellow wood butcher showed me a simple wrist brace that can be made from a piece of cam strap, a d ring and a piece of velcro. What has to happen is put pressure on the bones just behind the wrist. Supporting these bones helps support the carpal tunnel, helping it to keep its shape. After a few days inflammation lessens. I only wear the thing during flare ups which are mercifully rare.