Shorty you might think about cutting the shiners up and feed them to the small mouths.
I'm not sure they would eat cut bait or not but I did take out another 25 large GSH tonight. I think I would rather reduce the nutrient load in the pond rather than try and recycle it. Running total so far is 254 GSH in the 5-1/2" to 8" size range removed out of my 1/4 acre pond in the last six weeks, that's a density of 1016/ large GSH per acre removed. I doubt I have removed half of them that size as I still have mostly large GSH eating pellets at feeding time. I am starting to see the HSB, a few SMB, and an occasional RES eating pellets too which I hadn't seen until recently.
I did have a SMB try and steal a small 5-1/2" GSH that I had hooked next to the dock tonight, it looked to be about 13" long.
