All you have to do is hit with a single tap any way haha. If you've taken 45 ish damage from another source, no matter what you do you are going to burn out (according to you when talking about flame shield in another post, you're a scrub if you can't do that damage). That's my main issue with the grenade, you can totally evade a warlock only to burn out behind cover 8 second later. The only thing the burn does is give you time to get a few shots off while you are very low health, there is no 'surviving' when no matter what you do it hits for its full damage.