What to do if during the standing phase of walking meditation (due to the arisen thought), after the aforementioned thought fades, another one (or some other distraction) appear almost immediately, making it impossible to return to the actual "walking" phase for the entire duration of the practice?
Should the meditator continue on with standing meditation, switch to sitting meditation, use samatha techniques for some period of time, return to walking after initial distraction fades ignoring any new distractions or maybe something else?