If you are mowing tall field grass you are probably producing "short" clippings, unless you are using a sickle bar or similar mower.
Picking up short grass clippings is tough. We do this and use the clippings for mulch. I had zero luck with various rakes.
The best way we have found is to suck them up with a Cyclone Rake.
I second newbury's idea of getting a log arch for log handling. I'll be making one in the next few months.
A set of pallet forks and some good, heavy pallets will prove surprisingly useful.