I truly think that's a last resort. We built FD:Advisors so you don't have to do that because half the battle is intent, knowing that the person wants to help and what they want to help with (their expert areas and the markets they are interested in). I wrote an article about getting advisors to say yes
and that "Doing our homework" piece is a huge part and that's hard to do, so we make it easier. The other piece is on you - tell them (briefly) why you want them. Not because they are a CTO or a VPX but why them, what areas of expertise do they have, why did you reach out to them. Copy/paste emails aren't good here. And finally, do not propose right away. Just say you'd love to talk and see if there is potential to advise, not "xyz so will you be my advisor." Your goal is a first conversation (that you should have an agenda for).
As an extra, if you messaged me about advising I'd wonder what you were doing and I'd go look at your profile which doesn't say much. So, fill that out so they see you're excited and pumped and they don't have to work so hard.