Joe I understand the basic law aspect of investors with corporations. That is not what I meant, sorry. But if you have already incorporated then it doesn't matter anyway. I was just curious as to your decision to incorporate. As long as you know your reasons then it doesn't matter.
The only other thought I have is stack your team in your favor. If you have qualified leaders in your business who support you (not yes men though), then it at least lessens the chance that a VC will feel the need to load up your board with their own for fear of you being able to lead to profitability. Obviously, Im not suggesting family and friends but qualified leaders.
Its a legitimate concern, and I think you are right to have it. I wouldn't be focussed only on a controlling number of board seats but all. If you have the wrong investor and they even have one, it can cause problems. But a positive way to look at it is seek an investor who can bring a board seat with solid connections and experience that will support you.
Example, a few years ago I was in MBA school reading these Harvard Case Studies and listening to classmates and a few professors regurgitate all their book smarts. The studies were stale and limited to me. You study something and then listen to thoughts of people who had nothing to do with the company. I'm one who really wants to see the example, not just read about it. The study was on a man who was at the time the Director of the Board for Apple. So I reached out to him and connected, got him to agree to come speak. I occasionally go back to him with updates. I did in fact ask him to be on my board at the time. He was tied up with a dozen other boards understandably. But I think my point is, if you have people that are that smart, and they believe in you, you will be fine.