If FC is well controlled in SWG pool at relatively low percentage run time, do I really need more CYA?

My outdoor salt pool is a little over 3 years old. I'm typically keeping the CYA level around 30 which is much lower than recommended here, but find that I only need to run the SWG at 10 - 15% about 8 hours a day in the summer to keep the FC level around 3 ppm. The pool is used every day in season, but typically only 1 to 2 hours by one swimmer. Have not had any algae problems so far. So for my case, does it really make sense to raise the CYA levels?