Is folding back an option to tune loaded coil dipole antennas?

Usually, we tune dipole antennas by folding back terminal ends so that it is easy to restore previous length if needed. Same strategy does not seem to work with loaded coil dipole antennas. I would like to know your experience on this aspect. Have you found folding back a good option to adjust point of resonance for loaded coil dipole antennas? I have found that trimming the segment before the coil definitely changes it, when I made another antenna. Trimming terminal portion also had changed the values significantly earlier. This time I have not trimmed any element because last time I ended up with very short elements and had to abandon that project. At that time I did not have a NanoVNA. I was tuning using SWR meter alone.