[whiskey111]

to see the trim % watch your rudder pedals,that's what i do to see the trim %, as i play without hud messages

Yes, it's good solution too But in real pilots just set up qucikly required trim by watching the indicators. If You know your aircraft good, You will know all trim values for all speeds, altitudes etc.

This is some kind of idea for modders. I'm not one of them so I'm not able to do this mod, unfortunatelly