JimL, you had an incident and a bit of a scare, ok, tell us what happened.
You did not answer my question, have you ever worked in the bush/remote area? You seem to be saying because of what happened to you no one else should be doing it?
"Risk Assessment by a body of professional pilots" What was there background Jim, military with some local civilian flying and the North sea? Any of them worked the top end of Canada, remote area Africa or Australia? and I don't mean flying heavy machines with large crews. There seems to be the attitude on this forum that if the rules didn't originate from, or are not used by JAA, then they wrong/unsafe.
Helicopters do not fly away by themselves. There is a reason (collective not latched down on the R22 for example, or un-even ground in high wind, etc)
A 206 parked on flat ground is going to quite happily idle away until the fuel runs out, without going anywhere.