Monetizing eloboosting

So a game is upcoming that will be extremely likely to have an elo system with public profiles and a high skill gap. What would be a good way for a group of small startup boosters to monetize? Being very good at those sorts of games I plan to get highest tier rank ASAP and advertise the service.

Is paypal a no go these days? I will probably start advertising on various public forums or maybe make a promotional video to get the name out there, maybe a discord channel. Then make a website when money starts coming in. I don't really want to have to resort to bitcoin so what's the safest types of payment methods I could use?