Now it is harder to build up a good ratio, few leechers and torrent which don't last too long. You must have a good bandwidth and sharing them for a long time or a dedicated seedbox. You can also use freelech torrents to build ratio and as always we must always read the reviews of those trackers where one is committed to being active in them.
ps: another good way of building ratio is through cross-sharing, dunno if this tracker allows it, sometimes that is seen as a cheater.