To my experience its nearly impossible to keep a ratio on a private tracker. I am a big downloader, and my torrent is open 24h a day 7 days on 7. I have opened accounts on a lot of private trackers out there. The only way it works, is to download the popular series exactly when they are out. Which is the exact same bullshit as watching it on tv, you need an exact schedule. If game of thrones is at 9 on hbo, you need to be on the torrent at 10h15 max to seed it. Otherwise you wont keep a ratio and you'll just close one account after the other.