Wasting a few minutes over on Detailing World and stumbled across this wet sanding thread. To my untrained and frankly, unsophisticated detailing eye I thought it did a pretty good job of explaining the process via the guys experience training with KDS Keltec. Well worth a read...
http://www.detailingworld.co.uk/forum/showthread.php?t=244507&highlight=coupe
http://www.detailingworld.co.uk/forum/showthread.php?t=244507&highlight=coupe