Get investors to be able to visualize as much as possible. Tell a story. Focus on the solution it provides. Make your story relatable if you can. If you can get their buy-in on all these things (the problem, solution, common ground, good delivery of the message, etc) the prototype becomes less important at this stage of the game and all of those other variables will overshadow the thing you don't yet have. In your story/explanation, provide as much visual detail as possible--while still keeping it simple. Remember your ABC's and 1-2-3's.
