As you've proposed, if you're willing to give that person a C-Title or equity it's probably doable. However, an investor could perceive your reluctance to pitch as (a) an inability to sell or (b) a lack of passion, or (c) a lack of ability to push through in areas where you're not comfortable. All of those perceptions, as unfair as they might seem, reduce the likelihood of them investing. I would suggest that you take a training on high-stakes presentations from a company like www.distinction-services.com where you are coached (with video) to learn how to present and make an audience feel comfortable.