A few other points to make -

Testing -

During this cleanup, testing can become tedious. The easiest way I found to test during this shock procedure is to only test FC/CC and to use the 10mL sample size which translates into 0.5ppm/drop of chlorine titration reagent. Also, if you keep a good log of FC and CC, you should be able to see the trend easily and then you can dose regularly during the daytime without having to test each and every time. The critical times for testing are in the morning and evenings (1st test of the day and last test of the day) as those are the ones you use for measuring your overnight chlorine loss.

Reagents -

Shocking a pool can very quickly use up the DPD powder and chlorine titration reagents found in a K-2006 test kit. If you can, order more refills BEFORE your start. Another way to save on reagents would be to dilute your water sample in half with DISTILLED water and then multiply your results by 2. I would only do this for the less critical testing times during the day and not the tests for the OCL. When you dilute your sample, the +/-0.5ppm accuracy of the 10mL sample now becomes more like +/-1.0 ppm. So your tests is less accurate and not appropriate for OCL determination.