It depends on year, 2018 was really terrible, not sure if it was possible to earn 1BTC just doing signature campaign with member rank. Hope, next year will be better.
Participate in every social campaign:
https://bitcointalk.org/index.php?board=238.0 The more account you have the better but it's prohibited to do this kind of bullxit. Might your account will be banned and it's an abuse. Year 2018 was a rough for bounty hunters I hope this year 2019 will be the year for the better hunt.