Where do the HNW clients hang out?

I’ve been in the business as an FA for 3 years now and still very much in survival/growth mode. I’ve gotten few referrals from existing clients, but haven’t hit critical mass where I can rely solely on referrals. I’ve mainly used LinkedIn for prospecting but that hasn’t landed HNW clients due to it being so impersonal and they may not even live in my city for a f2f. I’ve read through other posts and seen that HNW clients mainly come from COI’s, but I haven’t had that experience yet. Anyone had any success joining a specific club, non-profit, country club, hosted seminar, etc that netted results? I know that nothing will come quickly and I’m likely behind the eight ball here, but it truly takes the same amount of time to onboard and support a $1M client as a $100k client…not to mention that birds of a feather often flock together. Any help or insight anyone has is greatly appreciated.