The reality is all of these items have mass, and where they are fitted will affect the dynamics of the trailer. What is unknown is how any of these will affect a particular outfit, but another major unknown is the drivers sensitivity to detecting any changes and their ability to provide effective control to manage the outfit.
My gut feeling is the lack of reports claiming cycle racks or microwaves etc were the main contributory cause of any incident suggests that caravans have generally have a much wider tolerance of these additional load than has been suggested.
I still advocate the principle of avoiding end loading and keeping a trailer as light and small as possible as good practice, if for no other reason than efficiency.
My gut feeling is the lack of reports claiming cycle racks or microwaves etc were the main contributory cause of any incident suggests that caravans have generally have a much wider tolerance of these additional load than has been suggested.
I still advocate the principle of avoiding end loading and keeping a trailer as light and small as possible as good practice, if for no other reason than efficiency.