genle aerobic exercises are good for raising HDL, walking, cycling etc. It isn't the intensity that matters, it's the duration. A minimum of 30 minutes gentle exercises each day is good for you. Omega 3 oils such as sardines, pilchards, mackeral. Cranberry juice is also good for hdl. Smoking kills hdl. The american heart association will never tell you this, but research has shown that a unit of alcohol every day increases hdl.
If this fails, which it did with me, then your statins need a turbo boost but from a different angle which will not affect the liver. We consume around 25% of fats through food and so a good drug such as Ezetimibe works wonders with statins because it helps block fat absorption through the gut lining. This method dramatically increased my HDL and lowered my LDL and trigs to rock bottom. Actually after starting this regime, my disease didn't increase for a year and has remained static.