What to use to remove hazy in paint.

Well the Worst body job ever has come back to haunt me again lol :violent1:after a repaint on the left quarter he blasted it with dust,so he had to wet sand to get it out and as normal it had a little haze,he buff it out.This is like 4 years a go,just now i am noticing the haze again what can i use to remove it,i don't have a high speed polisher either ,it an eye sore, base clear. HELP.