Are there other methods to support your expert's financial judgment that you haven't been told about?

If there was the major theme at some of the major BV meetings where lawyers and their financial expert witnesses met recently—Boston (ASA), San Diego (USD Tax Conference), and Chicago (NACVA CTI meetings and BVR Divorce Summit), it was this:  BV best practices now require that your expert witnesses don’t ignore a tool that’s available to support their argument. Your appraiser doesn’t have to use them all...but there’s no reason you should show up in court and be surprised to learn there’s another accepted method you’ve never heard about.