You need to go and raise some money so that you don't have to do such a hard sell. If you can't do that, and want to wait until you have a prototype then look t

You need to go and raise some money so that you don't have to do such a hard sell. If you can't do that, and want to wait until you have a prototype then look to hire someone on a contract. If it works out then you can make them an offer to join full time. I think you need to demonstrate what you bring to the table other than an idea. When you do that you will gain the respect of the hacker and you might be able to get a deal going. It might even be something like, when you raise some cash I'll come join you. What are you going to do for the first 6 months, to raise the value of the business? What have you done since you thought of the idea?