I think they limit out with nine trout, and they need to have their trout stamp with them while they do this.  It's not too hard to do if they are near the hatchery on the Turkey.  I've never seen artificial bait that big thrown from the end of a fly rod.

Edit:  I might add that the trout are not too smart when just out of the hatchery, but they wise up in a hurry.  You have to throw what is in season.  If you throw them a planter during harvest, they will be spooked.  Go with bright colors if the water is murky and darker colors if the water is clear.  The red combine could be good here, but I doubt if he caught anything with the kinze cart.  Even so, you can't just throw the red combine all day long and expect to keep catching fish out of the same hole with it.  You've got to mix it up a little.  It seems you can never have enough gear when fly fishing for trout.