I've restored 6 old sailboats in my time and I'm working on a Rhodes 22 now... so I've done a few hole repairs.
I have found this book to be the bible
http://www.amazon.com/Caseys-Complete-Illustrated-Sailboat-Maintenance/dp/0071462848
It has very good, detailed graphics that walk you through the process. See if you can find a used copy and then keep it on the night stand...
--
rgranger
Smith Mountain Lake, VA
Hobie16, Balboa26, Rhodes 22, O'Brian Windsurfer
--