Can we all get one thing straight here - for starters:
Dynamic rollover requires the helo to be in contact with the ground. You cannot get DR in the hover
Secondly, common sense dictates that when engaged in any form of hovering, one should be
(a) high enough so as not to risk clipping the ground inadvertently, and,
(b) low enough so as to get the little beastie back on the deck in one piece should something go wrong (EOL/hyd/TR fail etc).
The optimum height should therefore be around about 5-10 feet (depending on a/c type).
We all know that most of the time, most of us would get away with an engine failure from 10+ feet, but you can GUARANTEE airframe damage from this height if the pilot does nothing to assist with the landing.
Surely, we, as professionals, don't go around thinking "sod the aircraft, I'm OK, Jack"...do we?
As mentioned earlier, just because it's not your helo, doesn't mean to say you won't look after it.
An EOL from 5-10 feet is survivable (airframe and occupants), anything higher is almost certainly going to cost you your undercarriage and or your tail boom and or your job
Captain Eagle:
I think you sound and seem very mature from an aviator point of view for your age. BUT be very careful how you employ this tactic...You've got an exponential amount to learn yet and over confidence at this stage will come back to haunt you later..good luck with your vocation.