Have you tried observing the FIM rules ?
its far to complex unless you observe every week and can remember it all. I think the FIM rules are too complex, you should get a five for moving the bike sideways when stationary as well but this happens all the time and depending on the observer can be recorded as a clean, a one or a five.
Back to no stop is easier for the observers and makes for better trials in my view if the course plotters take the no stopping rule into account (so that you can ride round the turns rather than hop).