The problem with the above (i.e. going once or twice) is that they may start with an entirely passive approach at the beginning, as pts will tend to feel better with this immediately.
I find it interesting to ask patients what is actually done in physio.
Without exception, the el-cheapos get exclusively passive modalities. Slap on a heat pad and TENS for a little while and they're good to go. This is the only way these jokers can work multiple rooms, and crank out lotsa patients.
I wonder if they even teach active modalities at some of these places...