DPDs - achieving soundness

The Planning Inspectorate has this week published its annual report, and it makes interesting and easy reading. I was struck however by the statistics about how many Core Strategies are being declared sound. In the reporting period, 41 CS's were found to be sound, 8 unsound and a surprising 15 withdrawn or being withdrawn. Although, as the report points out, the number of unsound DPDs is falling, these latest figures suggest there is still some way to go. Given the more focussed emphasis on the key soundness measures ( the most onerous perhaps being the requirement for "robust and credible evidence") I wonder if Local Authorities are in need of more resources to further reduce the risk of wasted time arising from a finding of unsoundness or the need to withdraw. I'd be interested to hear from LPA readers as to how they manage these risks.