It’s quite a challenge, that’s for sure! The only way to spot SAMs is to look for the smoke of a launch and a small moving dot. Fortunately, you can skirt the edge of the envelope and take evasive with the SA-11, and since the scenario only has two launchers you only need to dodge 8 missiles. Less if the other A-4 gets shot at!
Yeah, the doppler navigation system is the only way to fly. It’s imperfect but with a sharp eye it gets you close enough.