Well usually I send my best team and hit it only once (weak attack). But now I'm starting to be more considerate.

Also for people who doing raid boss quest, hitting same boss multiple times does count. If you hit weakling boss with only lv 1 2*Knight 3 times is much worth it than instantly killing it. Besides raid points recharge is much faster, hell I bet everyone in here always have 2-3 raid points.

Edit : added wiki page for raid boss
http://xn--eckq7fg8cygsa1a1je.xn--wi...83%9C%E3%82%B9

It only says discoverer and participant, if you deal 1 damage, 1 billion, or last hit it doesn't mean jack shit.