Additional crew helps a lot, provided there is no steep gradient in the cockpit between you and an indigenous air race world champion holding a CPL(A), CPL(H) (rated for AS350, BO105,R66) and entitled to NVFR.
exactly my point, someone non-aircrew would trust the pilot implicitly whereas someone trained - even if they were very junior - would say something.
Trouble is - as we have seen too many times on these pages - when someone is determined to bend the rules because they can, they are their own worst enemy and any normal risk assessment seems to go out of the window.