@brians1209 As I mentioned before, my most recent upload features missiles that work exactly as I've described. You can control them.

@F104Deathtrap Then I won't be able to control the plane.

@brians1209 You eject the cockpit.

@F104Deathtrap Uh.. If I connect the cockpit on the detacher, the plane gets bumpy.

@brians1209 Put the cockpit on a detacher. Engines will only work under specific circumstances, so you may have to do other stuff as well. My most recent upload uses remote control missiles that have basically unlimited range and cannot be locked onto or jammed. I assume other sorts of things can be done with the same technique.

@F104Deathtrap How can I remove the cockpit? I can't load the level without a cockpit.

@spefyjerbf The best way to avoid missiles is to leave your cockpit block behind. Designing a vehicle without cockpit block is tricky, but it makes you almost invulnerable to lock-on weapons.

@Aeromen I've made a set of missiles like those in the past (around 2 years ago, idk if the game has changed how they work) and what they essentially do is zip around the target at extremely high speeds, but never hit it.

A guardian missile with a lock time of zero will brute-force its way through countermeasures. Looks like @Aeromen answered the rest. I have noticed that missiles behave oddly when their adjustment rates are too high, so watch out for that. I have some missiles in a subassembly upload that usually do the trick, at least for me.