I think the problem with the original question is that it is asking for a single answer to many possible situations. In other words, the question is too broad to be succintly answered.
In considering the movement of fluids, we should first ask, "Which fluids are we focusing on?" as circulation of lymph and blood have different considerations.
In discussion of lengthening/stripping muscles, we need to consider what else is going on in the area. Is the tissue contracted, or sore due to overuse, or tight due to underuse, or because of fascial adhesions, or something else? What is the pattern of the discomfort and/or dysfunction? What functional restrictions are present and/or perceived? What other health issues are present? All of this will play into determining what type(s) of techniques may be best suited for the job. The technique used will in turn determine what options are available for applying it. Then we can choose the best one of the available options.
If we also consider stretching protocols, the issue becomes even more complex, but that's another discussion altogether.
If a poster asked a more specific question regarding applications of a particular technique or working with a specific type of situation, it would be easier to give a meaningful answer.