To clarify, I did not recommend stocking bass and their prey at the same time, although that is a
common and effective practice. I believe that stocking predators at a later date is a good idea, but it does increase the pondowner's cost.
As for recommendations for stocking rates, I have never seen a recommendation for more than 500 prey/50 bass for unfertilized ponds
unless it was published by a fish vendor. For example, you could check out the recommendations of the Texas Chapter of the American Fisheries Society
here. For another source, check out "Management of Recreational Fish Ponds in Alabama" by Michael Masser. Both recommend the 500/50 rate, and both were written by management biologists that don't grow fish for a living.
If you are stocking a new lake, and if it is fertilized and a bloom established prior to stocking, then one can stock at the 1000/100 rate. Otherwise, you are spending more money on fish than you need to, and increasing the chance that corrective management will need to be applied in the near future.
If there is anyone out there actually managing small lakes for a living (Bob?) that can provide compelling evidence to refute what I have just written, by all means please weigh in on this subject.