So there needs to be a strategy here.
1. Avoid evil. In this case Helene Ritchie, a leftwing harpy who is destructive, and Sue Kedgley (concealing her Green moniker for some reason) deserve to be avoided.
2. Avoid the less than competent.
3. Avoid rent-seekers from unions or professional monopoly trade associations.
4. Avoid those who don't understand the role of the DHB. Including those in the sector with apparent axes to grind.
5. Select the analytically competent.