The best way I've found the throw objects is to "push" them toward your enemies and release. Don't throw it like you would normally. I started out terrible at it.
Also, placing the camera high with a downward angle really helps.
Yeah, I spent a lot of time messing around with the camera, on the sound bar of my telefision( below it) which was too low, on top of my TV furniture which was too high and on top of my television itself. I kept having deadzones either with my head when looking up and down or my moves would loose tracking. I have it set up in my bedroom and I'm probably standing way too close for games like Super Hot, Farpoint and Firewall.