The phrase "run it up the flag pole" means to trial or test a new idea or proposal. Synonyms for this phrase include "try it out," "explore," "experiment," "test the waters," "put something to the test," "pilot" and "prototype." Other similar phrases that convey a similar meaning include "road test," "trial balloon," and "beta test." All of these phrases suggest a cautious approach to implementing a new idea, allowing for feedback and assessment before making any significant commitments. As such, they are all useful for business professionals, entrepreneurs, and leaders who want to introduce new ideas without risking unnecessary pitfalls.