I've always assumed that a SWCG was just to maintain a constant chlorine level and that regular shocking was still needed. However, I came across this from a moderator (with the same username as someone here, Waterbear; same person?) on the PoolSpaForum:

"...In general boost is used to '"shock" a pool and salt pools rarely, if ever, need shocking when properly maintained..."

Is this correct?

I shock every two weeks or after a big rain (enough that requires I pump excess water out). Bather load for our pool is very light (only two adults in the household; maybe 1 small pool party a year).

Am I just wasting my money?