I have about 35 CYA so my shock level is 14. I started shocking yesterday and it dropped 2 overnight and during the day I loose anywhere from 2 to about 4 per hour (its a hot sunny day here in east tenn).
I read when shocking that we should check the FC every hour or so and bring it up to the recommended level. I've been watching the use rate and am adding bleach to the extent that after an hour or so the FC has been used up and is around the min level. Then I add enough bleach to bring it up so that it should be around the min level after another period of time.
 Is this method good, bad, or doesn't matter?
 Are my FC loses as expected?
 Any other suggestions?