Different lead ropes offer varying degrees of hold. For example, a brand new poly lead rope may have less hold than an older, cotton lead rope that has been hanging in your barn for years. Experiment with different lead ropes around your barn and you'll see how different ropes work.
Often, it will only be necessary to use the Level One tying method, because your lead rope offers enough hold to support your horse. But note, if you can't pull the lead rope through the Blocker Tie Ring, you are probably using more hold than necessary to support most horses.
The suggested length of lead rope between your horse and the Blocker Tie Ring is approximately three feet. You may need more or less depending on your horse.