Outer skin of transom removed, rotted plywood removed from outer layer.  Floatation foam (not closed cell) removed and discarded. 

 Above shows damaged skeg

 Poor quality patches ground off exposing hole through outer skin of hull

 More damage ground off port side of outer skin of hull. Awaiting delivery of 40 grit paper for my Fein RO sander.  Grinder I have been using just makes too much dust and the Fein is nearly dustless.

 Below is poor repair ground off outer skin of hull revealing inner skin.  Viewing from inside there is no obvious damage to inner hull. The gap between the two is about 3/16".  Not sure how to patch it. Inner hull seems to be pretty rugged.