I'm so glad I found this video! I heard this sound while testing mine out and thought I was crazy! I'm glad my sawmill is a bit loud because that would be nuts.
I wish I'd had a camera to show you what these things are truly capable of. I dragged my 33ft steel hull yacht weighing 4.5 tons on a 1.5 ton boatyard trailer I'd made using two front axles off a 7.5 ton Bedford lorry (we call them lorries not trucks in the UK) into a farmyard then did a 5 point turn in the yard to get turned round ready to winch onto a low loader. With a purchase tackle you could shift a heck of a lot more.
got my harbor freight atv winch on sale for $50, it pulls stronger and faster then that winch but not portable by design, i'd have to design some kind of portable mounting which would probably be worth it because a winch that slow would make me crazy......
I know this is old but those little winches are beast and a nice little winch to have. Don't sleep on these. They can pull a pickup onto a flat bed as it's 6k lbs rolling pull; It's slow but it does pull it up safely.
Thank you for posting this review. very interesting, one comment if I may, the two legs dropping down the inboard end of the trailer to secure your new ball mount extension, may well creep up and out of position under heavy load. a creep preventer pin of sorts may be needed. Top job..Cheers from Michael. Australia.