Kick stand on the bike should hold up both,
2 wheel trailer holds itself up , attached to the bike..

but I have seen owners of BoBs adding their own Kickstand..

Either to the tow fork , or through the mesh Deck.

Jack-knifing the trailer also holds it and bike up.


looking at the lumber and hardware store nature of the DIY one ,
I think they were thinking Utility use locally rather than long distance touring, ..

But once You Own the Conduit bender , you can use Aluminum tubing, for the frame too/..