I shouldn't reward your "suck" comment but I'll help a bit. Your gun will shoot high or low based on both your bead/stock and your shooting form.
To shoot trap targets and other going away and climbing targets you should pull from below them until you cover the target and pull the trigger. Of course "trap" guns have high combs and angled ribs to compensate for this effect. With them you can see the target and still shoot at climbers.
My experience has been that new shooters consistently shoot under trap targets if they shoot quickly and they shoot over them if it takes them too long to get on target.
I don't own a single shot, and I don't understand other people's affinity for them, but all guns have some variablity among point of impact. Pattern your gun, and go shoot. See what happens.