This one is very interesting to me. Been scratching my head on it today. I see it as how many GC are required to "mow the lawn" and then "keep the lawn mowed" as two different numbers of GC. Does it make sense to help the GC out with either herbicide or mechanical removal of the bulk of the problem and then just stock to "keep the lawn mowed?"
Bill, this is what I'm doing as well. I had a very severe coontail problem, but only stocked GC at half the recommended rate. They will muddy the water, so I didn't want to deal with too many for the next 4-5 years. Aggressive herbicide applications this year, and hopefully the GC will be able to handle most of the coontail next year.