Good advice from cwstnsko. It gets easier with consistency.

Yes, CYA protects Cl from the Sun....that's it's only purpose. The tradeoff is that the Cl is somewhat less effective with higher CYA levels so you must maintain a higher Cl range to compensate. No big deal, just maintain your Cl levels per the "best guess" chart (3-6ppm with CYA at 50ppm)

You will still experience some Cl loss daily. Most pools seem to lose 1-3ppm.