What are the best methods for unclogging a tub drain without overflow?

The best methods for unclogging a tub drain without overflow include using a plunger, a drain snake, or a mixture of baking soda and vinegar. Plunging can help dislodge blockages, while a drain snake can physically remove debris. The baking soda and vinegar mixture can break down clogs. Remember to cover the overflow opening to prevent water from escaping.