Hi
The game translocation industry in southern Africa has been using trailers for well over 30 years to move their H300s, R22s and E280s between jobs without problems.
The suspension is the most important. The best I saw was a trailer using the rear cantilever suspension off a VW Combi.
Blades are supported. On the H300 two blades are folded forward. On the Enstrom you have to remove them (it's a pain).
I would have to dig to find pictures.