STEP 1
Buy a lot of BTC
STEP 2
a) Announce a bitcoin fork
b) Take advantage of the fact that bitcoin cash proved to be free money.
c) Come up with a plausible reason for the fork.
d) Announce a date but leave all other details vague, not committing yourself to anything.
e) Leave all the uncertainty out there so people FOMO, but don't tie yourself to anything
STEP 3
a) Watch BTC price moon as people flood back into BTC from Alts hoping to get "free money"
b) Shortly before the fork date, sell the BTC you owned before the announcement at a very substantial gain (before BTC invariably corrects post fork), and buy cheap Alts (a result of the popular move back to BTC)
STEP 4
a) Watch Alts moon after the fork, like they did after Bitcoin Cash.
STEP 5
a) Let the project die out. Say this or that happened, come up with some reasonable excuse, and since you never really gave anyone any firm information about what you were doing, nobody can prove you lied or scammed.
b) Laugh at how easy that was