Announcing grand plans prior to laying the groundwork activates opponents and gives them time to prepare to defeat you. We worked for an entire year in Milwaukee before our plans to expand parent choice became public. That proved to be a huge advantage. Do your homework quietly, gets results and then claim victory. You fail to send the best messenger.
Egos get in the way of sound tactics.
Some people who should stay in the background just can't do it. This allows opponents to demonize the effort and undercut its credibility. Coalition members compete for credit . Seeking individual or organizational credit kills trust and undermines teamwork. Victory produces enough credit for everyone.