Wealthy people often don't appear to be wealthy. They'll drive cars that are at least a few years old and they wear simple clothes that make them look like everyone else. Wealthy people have their house paid off and might have a boring business, that provides nicely for them.
They often are able to use discretionary income to make an investment and will rarely contact you, especially if you send communication from time to time.
On the other side, many entrepreneurs will pursue the people with flashy cars, clothes and big homes. They think that these people are loaded and they might be right, but they're usually loaded with debt, not wealth and are unable to make an investment in a start-up company.
This person may even lead you on, as they try to figure out how to come up with money to invest, but ultimately leave you hanging. When I had someone committing to invest I told them that I couldn't secure the shares for them until I had the money in hand.
You never know when you're going to meet your next investor. They're at social events at the grocery store, at a friend's house or they might even already be your customer. NO matter where you are or what you're doing, you have to be prepared to pitch them.
When you do meet them, show them how you can be responsible with their money and stretch it to get the most out of every dime they invest. You want them to know you're going to do everything possible to make their investment work.
While wealthy people will be flattered that you've figured out who they are, they won't want you to reveal their identity to others. Ensure your potential investors of complete confidentiality.