If the target is inclined to buy what you are selling, the chance of success is greater. Beware of giving free seminars to curious but not probable investors. Right round, right funding level, right ownership stake, right lawyers, accountants, management, offices, culture. It is a bad use of time to persuade people. It is easier to find someone who wants to buy, and then pitch them.
Persuasion is too much work.
Wrangle an invitation to the party, but not by asking if you can come. Never call a VC to pitch them, unless you need practice with some throw away prospects. Pick your targets through careful research, and surround them with PR, references, whispers etc. Get them to call you. The quest for money is integral to building the business not separate.