The mechanics of trimming a stabiliser/elevator combo are very interesting and one hopes that all who fly such things have a working understanding, especially on aircraft that have a pronounced pitch-power couple.
One thing that strikes me is that if you are aware of your attitude, there is enough feedback that control movements should be instinctive. Pitch too high? Push forward until desired attitude reached then trim out force while holding attitude. Unable to reduce pitch with full forward movement? Trim forward until you can. The inverse applies with low pitch.
All of the above requires an instrument scan in IMC, at least of the blue and brown bits of the PFD on a 737 or looking out of the window if you have visual references. It’s the same in a Supercub. If you’ve lost SA in attitude then bad things might happen, regardless of the trimming situation...