Check if there are clouds/night/fog you could use before you spawn it in.
If not, try to approach from a different angle/altitude than people would expect. SPAA can’t see everywhere all at once, you see this in low tier before everyone gets radar. People who are used to radar carrying their ahh will be complacent and not scanning everywhere manually.
Basically, even in worst case scenario with clear blue sky it’s easier to avoid detection by mk.1 eyeball than all-seeing radar
Radars should obviously have some trouble locking it, but IR missiles won’t care at all. If it’s not shot down by the radar missile it is going to be brought down by guns or IR missiles. At the end of the day it’s gonna get pulverized anyway
That’s what I’ve seen too, but i doubt gaijin will model it correctly. The Harrier is supposed to have some IR signature reduction too, but it doesn’t.