I am having difficulty getting the hang of the Round weapon in Space Invaders Infinity Gene. While the "bullet eating" effect is handy, I'm not sure how best to use it in general because of the way the bullets shoot from behind the ship. If I want to shoot an enemy coming from the upper left of the screen, I have to move my ship towards the bottom right in order to shoot it. Should I just be constantly moving my ship in a little circle? Is it just a matter of practice and fine-tuning? What am I missing here?
I'm playing the PSN version, so I'm using the joystick controls on the PS3 controller, not the iPhone version, where you can use touch, if that makes any difference.