“Its not about finding the no-intrusive approach, its about finding the least intrusive approach. Before you ever have to escalate the level of intrusion/pressure you are using get a more experienced trainer to assess the video of your training and look for the different least intrusive method that you aren’t able to find or haven’t though of.”
(Paraphrasing) Your learner deserves that level of consideration. Even if ‘X’ has worked for the 100 learners you worked with before does not mean you should go straight to ‘X’. You still need to test every least intrusive option before you get to ‘X’ for learner 101 as they might never need you to get as intrusive as ‘X’.