I meant to point out that HAYLAGE was chopped wet hay put up in a silo (upright or bunk).
Also, there is a 3rd method of putting up baleage - using a BAGGER. This is one great big long bag & the bales are "stuffed" in (actually the bag is pulled over the bale). This is probably the worse method (although they have improved the system greatly). This is one long bag, if it got a hole in it (like with varments) than the whole bag could "breath" - which would spoil all the bales.
With the in-line or the marshmellows, the plastic wrap is put on in about 5 layers deep, and is stretched real tite like putting saran wrap on you left over food. When you get a hole, it only spoils a very small area around the hold.
We've been putting up in-line for about 15 years - hire it done. We don't own any hay equipment. Two people can put it up. Cut, sometimes rake (depends on how thick it is), bale, haul & wrap all in 1 day. Can put up 100 bales/day. I usually run the wrapper, so that's a 3rd person, but not necessary if there are two top notch workers. 1 mows early AM, starts baling around 11am, 2nd worker uses pick-up wagon to pick them up & deliver to wrapper (dumps in nice neat line). Then he can get out of that tractor & get on skidsteer to load self operating wrapper.
Can do it when it is cloudy, even have done in when it was raining, just as long as we aren't burying equipement in the field :P