Just something I noticed while doing the daily today.
1) Get the daily, bind the Practice Torches on a key, abandon the quest (since it's timed)
2) Accept the quest again
3) When you toss a torch, press the key you bound (to toss the torch), then press the key again immediatly.
That way, the torch's target circle will reappear, and you'll be able to target the torch while the practice torch is cooling down (it has a ~3s cooldown), and be ready to throw it again, already targetted on the next torch, when it's back up!
I will update a video soon, if you need it.