Too many spotty kids trying to make something simple appear complicated here, I fear.
Chuck is 100% correct. One shows the attitude for a particular phase of flight and then describes it to the student. Whether one uses rivets up the windscreen, fingers above the horizon or whatever, so long as the student can select, hold and trim the same attiude when given control, that's all that one wants.
Given half a chnce, I'd require any new FI to have at least 1000 hrs experience before teaching others. Very regretably, flight instruction is too often a method by which wannabee people-tube first officers (deliberate lower case) gain hours at the expense of others.
...and there is NO limit for the number of hours you need before you are immune from learning from others!!