Deeper, yes your right shoulder straps are mandatory but was just saying that not everyone wears there shoulder straps when lifting (which used to include me) but now I personally find it more comfortable wearing them whilst long lining especially in the AS350....but its a personal choice for everyone to decide for themselves.
As far as the helmet goes I stand by my statement he was lucky he didn't whack his head on the door pillar.....I know helmets wont prevent all deaths or injuries but they might prevent some???
Dan