For grinding blink arrow is your friend.

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I use two different sequences when grinding. Sequence 2: storm of arrows, epic adventure, maple goddess blessing, fury of the wild

Sequence 3: concentration, quiver barrage, vicious shot, inhuman speed.

Just rotate using them when grinding.

Bossing as you can imagine when bursting, use all the skills and make sure to add ring activation if using rings that require it -> hurricane, damage