Ask HN: Any HFT Algo Ace's / Architects Here?

Is it possible for a layman to enter the ring? With hopes of success, that is. Most I find on Google re: HFT seems like a scam. Was wondering which if any HFT apps would be good for a casual investor to step up his game. I don't see any HFT simulation sites, only ones with ~20 minute delays before buying w/ play money.