The trick is knowing how and where to attach the load.
I bet it is and that's the thing -- it's down to indivdual experience and the acceptance of risk. I cannot imagine the CAA's response if people started regularly attaching -- on a more or less ad hoc basis -- 18 foot canoes or semi-industrial quantities of wood to their aircraft, or washer-dryers to the tie down loops! That's a reflection of the different nature of flying here -- it simply isn't a utility means of transport as it is in remote bush areas.
Anyway, different place, different attitudes, different regs -- no problem with that. Of course, maybe I'm wrong about this and the CAA would tolerate it, but I just can't see it. I nearly imported an aircraft earlier this year, but thank God I didn't, as the CAA paperwork would have been horrendous, given the mods that it had. e.g. I'd have had to get the welds x-rayed and analysed chemically.
Does look fun though (to watch).
QDM