I peaked Master from this tool (was a hard stuck plat). The way it helps me out is the auto-aim (ghost aim), and when you have a target locked, you can hit the key and the bot will fire at it. Also auto-flick looks completely 100% legit, just make sure you dont use it too often to make it less obvious.
I've only tried 24 hour basic so far, so I couldn't test other projectile heroes atm but will buy another one for sure.
Highly recommended!