Just when I thought I was done with this experiment I had another idea. I glued a heavy weight paper to the back of the copper using poly urethane glue. The paper is the same type used in the underpayment of a wood. The paper bonded great to the copper. So the next step is to bond the copper/paper layup to fiber glass and wood, just like a ski, and see if it all holds together. If this works I may get a copper ski before the ski season is over.