The reason I'm telling Dinsmore to weigh and measure 30 bass is simple. Doesn't really have much to do with statistics. Feed-trained bass are bred to be aggressive. So, if 30 fish have Wr of <90%, my advice would be one thing. If 15 are Wr >90, and 15 are <90, I'll tell him something else. If 4 look terrible and 26 are obese, I'd tell him different. Those lengths and weights well tell us if he has a "food" problem, a prey problem, or a fish behavioral problem.
For example, I've seen feed-trained bass growth level off when a feed budget levels off. When a guy sets a limit on fish food, dominance at the feeder defines relative weights of a sample of the fish, not necessarily the natural food chain.
If all his fish relative weights are down, then he has food chain problem, and the solution is different.
