More questions!I use one of the lawn leaf catcher things that you pull behind a garden tractor. I dump piles at each coop, then on to the pigs pen, and toss a bunch in the hay cage for the goats and cow. I never have to store it long LOL! (I wish we had more acreage to plant sorghum and alfalfa.) If I do store any, it goes into the loft of the livestock trailer, or more in the pigs pen. The pigs just devour it, and its very healthy for them too. And its great for deep litter in the coop also!
I also gather pine needles as often as possible, the catcher picks them right up.

(Maybe I should do this in pm...if you want to pm so I'm not boring everyone with this you can!)
With the brush hog, how tall is your grass ...Do you cut it when it's "hay-height" of 8-14"? I'm thinking it has to be on the longer side to feed it to the cow?
Is there any reason that the cow doesn't graze it standing rather than your cutting it and taking it to her/them?
Sounds like you don't store it for the winter so you're not baling. Have you ever kept it loose for winter? Does that work okay?
Here's What I'm Thinking...
I have a 2 acre pasture area that I let grow out last year for hay. I don't have a brush hog and I had thought I could get a local fellow to cut and bale it. He finally did but it was just a hassle. In prior years I was just cutting it with the regular lawn mower attachment. The chickens do LOVE the cuttings for their nests, etc., but I was losing a lot of it since I don't have the sweeper attachment. I'm hoping to get one of the catchers this season and will definitely keep all the grass clippings. But what I was thinking is that if I had a brush hog attachment rather than just the regular mower, maybe I could do it at hay length and use it for animal feed or possibly even sell some of it if I don't have any animals to feed.