This. Also try to phrase dissent as questions, such as "How likely is it we will be sued?" "What will we do if we are sued?" Put the onus on the advocates to

This. Also try to phrase dissent as questions, such as "How likely is it we will be sued?" "What will we do if we are sued?" Put the onus on the advocates to address all of the concerns before the plan can even be considered. If they don't have good answers to scary questions, it will be the best help you can have.