The strategy is to hold F (or whatever you enter/exit vehicle key is) the moment you've triggered a marker, continuing holding F as you press the key to skip a cutscene, and then let go of F once you're back in control. I'm pretty sure the vehicle has to be close to the marker for this to work.

Normally, the vehicle you're in will disappear after skipping the cutscene which happens before getting into the Banshee.

This marker cannot be triggered while in the helicopter, you have to get out and have Phil in the marker's range. If I hadn't held F after triggering the marker, the heli would have disappeared.

This is a huge time save for classic% Easy 5 minute time save. Very nice find. I'm just thinking about uses for that in any%

Have you tested it with Roman's Sorrow? The despawn zone there is normally huge and time costely to keep the helicopter.

I'm actually unsure how this strat works. I can get it to work during Meltdown every time and I know all I do is hold F. I've been struggling to get this to work during Trespass though. What I thought worked yesterday, isn't working today. I would get out and hold F the moment I see the fade out. Today, it's like a <5% success rate.

For Trespass: I've noticed that the marker doesn't always trigger at the same time. Sometimes it triggers when Niko's door shuts and sometimes it triggers when Bell's door shuts (Bell's door almost always shuts about a half a second later). Think of this as an early trigger and a late trigger. It seems that an early trigger is the key, but I'm not sure how to consistently get it. Sometimes both Niko and Bell close the door at the same time. I'm not sure if Bell was faster or Niko was slower. It's really strange. If you do get an early trigger, you still have to hold F when the trigger happens, at least that's what I'm thinking.