There are many strategies to choose from. It is important that you test and measure the effectiveness of your strategy or pitch. Change it until you have it working very well and then continue to use it unchanged until it stops working. This may sound obvious but many hardcore salespeople fail in this simple process. Continuous innovation will lead to frustration and failure. Find the thing that works and stick to it.
Your business probably already has a proven track record of success with its sales pitch. Additional strategies should be used to supplement your scripts not replace them.
Live with passion,