Actually a Light gun package, low fuel and low weight A-8 is a very competent dog-fighter. Sure, you don't have many options but it's doable. You have to fully understand the plane's limits, ACM and your opponents airframe as well. The good thing about the A-8 is it's firepower. Even with the lightest gun package it's still plenty of destructive ammo down range and a solid burst on any single or twin engine fighter will get knocked down in a swift fashion.