[BigLew]

Now I know more about the problem.

Get yourself a palm sander, if you don't have one. Build yourself an extension pad off the side or the front depending whether or not the sander is straight line or orbitable motion. Put a piece of foam backing or velcro hooks on it and get some appropriate sand paper. Leave some length for grip or applying pressure from the outer edge and stick the extension through the open slots of the louvers and take it down. Hit it with a few coats of Sikkens (what you have on the frame and call it a day. Boats are for making money or memories , not terminal frustration.

Remember, the finest Navajo woven blankets and other folk art were always left imperfect so that the Gods could enter the work and finish it to perfection. Call it your Navajo project!!!