Professional speaker Ron Hoff suggests to motivate your audience to do something:
- Give them one specific thing to do
- Have immediately available any equipment or supplies they need to do what you ask of them
- Get them to respond in as short a time as possible (ideally immediately)
- Give them a reason that personally motivates them to action (e.g., save money)
Tim Wilson
Professional Speech Coach
Free speaking tips at: http://speakingquicktips.blogspot.com