Many people find it constructive to use multiple techniques in their practice. This can be skillful, for one, because a practitioner will tend to hold a given technique in a certain light, emphasizing some features, and deemphasizing others. To use the analogy of "pointers at the moon," each technique serves as a pointer, askew in a slightly different direction.
By keeping track of how practice makes us feel, we can have some sense of which technique would provide the best course correction. As time passes, and experience with a given technique grows, the pointer that it provides will become more refined.
To help this process along, a few example questions: in practice, can the experience of compassion become part of the way of looking? How about the feeling of equanimity? What would it feel like to apply less effort? And in the heart practices, how high can the concentration be?
At the deepest level, all techniques are pointing at the same thing.