Need Experts on retirement planning

Morningstar recently recommend writing a “retirement policy statement” on issues like risk tolerance and asset allocation that might change after retirement. I’m looking for financial advisors, retirement experts and academics with tips on what ought to be in such a statement, and how to manage it over time. So what’s the basic idea? I assume it’s for guidance on investing and spending decisions going forward, so you don’t just dip into your nest egg on impulse. What else? So what should be in it? Should it be shared with your advisor? How about with family? Should it be detailed enough to address events like a market downturn, or should you plan on revising the statement as conditions change? What steps should one take to keep pros like your broker or advisor accountable to the plan? Should you ask them to sign it? What else should I be asking? Requirements: I prefer responses by email containing usable content and quotes, and because I usually get a lot I almost never respond to ones merely offering a source for interview. Please include the source’s contact info, full name, preferred title in its shortest form, firm and location, which is often hard to find on the website.