Keep asking again and again. Celebrate your successes. Regardless of how small, celebrate progress. Whether your group measures progress by the number of canoe trips, miles of buffer strips, acres of no-till, or depth of a secchi disc dipped into the lake, recognizing milestones is important. What's important in reaching consensus is that everyone can agree to live with a decision.
Conflict can be healthy - if managed positively.
Conflicting views or ideas often become a third view or idea that can be healthy for the group's efforts and the watershed's health. When you set a lofty foal, break it down into smaller steps. Before you know it, you'll have reached your goal.