I think that for a dedicated swimming pond of 1/2 acre, to keep nice for swimming, the fish should be limited to FHM and a few (no more than 20) CC. That way, you don't feed very much and can still have some fun catching the CC out before they get too big and become pellet hogs.

If the bottom is kept free of heavy structure, the CC won't reproduce, and the numbers can be controlled.

Bluegill or LMB, uncontrolled, will have a population explosion, that, with feeding, will cause a fertile pond conducive to FA and other algae blooms.

Both my 1/4 acre ponds now have considerable amounts of FA. I think it is the result of substantial feeding.