I had the same problem (unable to see them at all, NVG's useless in VR).
Instead I depend solely on the A2G Radar in SEA mode. I run in, pick a target, and hit it with a salvo, then back out. Plus, the radar seems to give me the target's heading/aspect and speed, so that I can lead with the rockets. I assumed this must be how the Hornet was intended to be employed in this mission.
So far I have not completed this mission due to life interrupting me near the end (almost made it back to the boat 3x times and keep having to stop playing), but have been able to whittle down the fast movers pretty effectively several times. Typically we've cleaned up all but 2-3, last time there was only one left when I went winchester on rockets and 20mm.
Great mission Baltic, I'm thoroughly enjoying this campaign, it's driven me to really learn the Hornet and become a better DCS pilot!