Jacking single axle trailer

Friend of mine recently bought a new single axle Lance trailer. They provide instructions for a lift point that is one of the brackets for the dexter tor-flex axle. So at least for Lance, you don't have to jack it up under the frame. In fact it seems like I remember they said not to jack under the frame, but I may be mis-remembering that point ! They use an odd method of building their frames of thin material, with lots of "lightening" holes, bent into shape then huck bolted together.

I made a "cradle" out of scrap pieces of 2x4 glued and screwed together to lift under my funfinder's axle.