I have to say it didnt look at all dangerous to me ......just boring !!
Unsecured over water at that height is probably much safer than secured surely ? There are plenty of winch operations going on with much more potential danger than this one in my view . They guy is going to fall say 20ft into water ...big deal . The helicopter autos into the sea with lifeguards around , again , shouldnt be life threatening .
But why do it when it was spectacularly ...unspectacular !!!!