Thanks for the pic's wdcook, but...
What are you doing with the mob grazing? Are all of your pastures set up for MIG, or are you doing this just to get small acreage areas cleaned up?
We do some of this in the winter on hay fields that grow up pretty well after we take the last cutting.
This fall/winter I am trying to figure out a better way to accomplish this.
We have about 30 acres of grazing/hay circles that we have done/are doing MIG on this fall/winter. One field is about 14 acres, I have 34 replacement heifers on, I am half way across it, and as of this coming weekend, they have been on it 6 weeks. This field had pretty good regrowth on it, about 7 to 10 inches, and had been "top" grazed by half of our first calf heifers for about a month. So far it has worked pretty good and they haven't been starved yet. I actually fed some hay this morning since it snowed a little and they looked at me like I was crazy.
The other little circle is not quite as grown out, but have done the same and have been running our first calf heifers on it. They also have access to about 10 more acres, but there is very slim pickings on it. Less growth, same amount of movement on division fence, and they weren't all that interested in the hay this morning either. There are 18 head on this field.
They have been on irrigated pasture all sumer and are in good/almost too fat body condition. So this time of year I dont get too concerned about them having to look for their food.
I am moving the division fence on Sunday, so I will try to get some pictures for those who don't quite understand what I am trying to say. It is pretty interesting trying to figure out the correct way to manage irrigated pasture, summer and winter, and still make the cost work out. I think I am getting close to getting our program figured out, but I won't be writing any books on the practice!!!