71 Starlite ???

[Letsgetbusy]

I just purchased a 71 Starlite tent trailer My ? is it has a l shaped  square L shaped bar about 3 ft long on each corner it bolts underneath it s also supported by cables that attach to the bumpers it is the same heighth as the trailer folded down what are these for I dont see them on any other trailer??Thx

 

[bleski]

If it's an add-on, maybe it was used as a rack for carrying extra items?  Maybe a bike rack?