I'm sorry but there is little else I can suggest, there are no "winning strategies" for this activity, or any of the PIP activities if there were then everybody would be using them. Whilst I realise that it is an imprecise science all you can do is hope that you have a reasonable DM, they do exist
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems
The following user(s) said Thank You: Alpro Cherry