If it will let you do them (and it should) I recommend it. It won't be hard to do the first few and what you get is a small DoT effect you can use just before the Mob turns and runs to make the final kill easier or use at the beginning to give you a head start on tough mobs (and generate some extra aggro).
Using it takes some practice because if you're too far away you have to wait for the ability to reset (last time I played my Drakkin, you get a wasted effort rather than a message saying you're too far away).