I finally copied all the files from my old computer so I could remove its old screen and some hard drives from my desk. That also made room for my speakers to come up on the wall which makes the sound very much better and it freed extra space. Voilá.
In the afternoon I tested a fake leather tube, designed for taking the pressure out of the horses straps. It was perfect for putting around my waist so that I can rest my back against the rather sharp edge of the kayak cockpit using the padding. It also seems to support the small of the back and diminishes the pain to nearly nothing.
In the evening a guitar student came by for a lesson, I really love teaching the guitar and hope to get some more students eventually.