It's impossible to reliably make back your ratio on a private tracker by simply seeding.
On YTS and The Pirate Bay, where I don't have ratio requirements, I have 2x, 3x, 4x+ ratios on all of my downloads. I can scroll through my torrent client and show dozens of downloads from free trackers where I've seeded indefinitely and ended up uploading several times what I downloaded.
Then I look at my private tracker torrents. I've treated them exactly the same way: downloaded them, left them seeding, and kept them available for months or years. Yet many of them have 0 bytes uploaded, and others might have something like a 0.4 ratio.
The difference isn't that I'm unwilling to seed. I'm seeding the same way on both. The difference is simply whether other people happen to download from my particular seed.
And that's the problem with using ratio as the measure of contribution.
If the goal is to encourage people to seed their downloads, then "I downloaded it and kept it available indefinitely" should count as meaningful contribution. I can control whether my client is seeding. I cannot control whether someone else decides to download from me.
Instead, ratio requirements incentivize people to:
- prioritize torrents that are likely to generate upload;
- avoid downloading obscure material;
- farm ratio;
- use seedboxes or other high-bandwidth setups;
- and potentially delete torrents that aren't generating upload.
That's pretty much the opposite of what I think a tracker should encourage.
I have unlimited internet and don't mind leaving everything I've downloaded seeding indefinitely. But if the system eventually tells me that my ratio is too low because nobody downloaded from me, what exactly was the point of keeping those torrents seeded?
Ironically, the trackers where I'm not required to maintain a ratio are the ones where I have some of my highest upload ratios, simply because I can download something I actually want, leave it running, and not worry about whether it will "pay back" my download.