towing with pintle hook?

Snowboardripper on this forum tows an ex-Canadian Army Trailer with a pintel.

If you're talking about the Class III - type hitch, where your pintle bolts up to a male insert, my only concern revolves around additional slop in the connection and how it relates to your comfort. The pintle/ loop setup inherently has a bit of slop in it (compared to a standard ball), and then you add a bit more movement from the receiver hitch. I only mention it for the possibility that you might be sensitive to the occassional "clunk"...but, in the worst case scenario, you go down a concrete highway with the trailer lightly (relatively) loading the tongue, and the slop translates into a kick in the pants over every joint on the road. So it's a comfort issue -- I do see the benefit of both the hitch setup and the off-road duty trailer.

Any idea as to the unladen tongue weight on those trailers?