By the way, remember the photo that CBRob posted with his crushed grain under the rope wraps/oarlocks? I yanked the rope wraps off of my oarlocks and also have crushed grain. Mine will get a carbon/glass wrap under my ropes before I put the rope back on.Thats good work on converting those old oars to square tops!! I always love it when something old you made years ago can be brought back to life again with some creative thinking.
I will really rough sand the shafts to get all the old varnish and epoxy off, so the new epoxy can saturate well and bond to the carbon/glass. Will do 1 layer of carbon on the bottom for strength, and 2-3 layers of glass over the carbon to spread the load.
Your sleeves are a good idea...think about a double layer of the sleeve material under the rope wraps.