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Helmets are necessary for some applications imho, better safe than sorry. But it depends on the circumstances. I would go with the helmet even if...
Looks special, will definitely turn heads rolling around on it :D Something different!
Nice, will be needing to watch repeats though somewhere, or recorded.
It must be a shocking experience, I guess it's just part of the risk, dunno if I would return to the waters if I still could after an attack.