They also take more risks. Other than doing some background and reference checks, they rely on their instincts. And they do deals quickly. If they don't like a deal, they won't string you along by asking for a business plan or more details. Angels generally prefer to maintain a low profile and they enjoy their privacy.
Good entrepreneurs are good networkers.
They know how to find prospects in a crowd. Upon finding a supporter to advance his cause, the entrepreneur will get fifteen minutes or so to make a pitch to the network. If little or no interest is garnered, it is a sign that something is wrong. Pitching the same proposal to more investors will likely produce a similar result. Angels invest in people.