Securing an outdoor table on a sloping deck can be challenging, but with the right techniques, you can ensure stability and safety. Here are the best methods to keep your table firmly in place:

1. Use Adjustable Table Legs: If your table has adjustable legs, extend the shorter legs to level the table on the slope. This simple fix can prevent wobbling.

2. Install Table Anchors: Heavy-duty anchors or straps can secure the table to the deck. Choose weather-resistant materials to withstand outdoor conditions.

3. Add Non-Slip Pads: Place non-slip pads under the table legs to reduce movement. These pads also protect your deck from scratches.

4. Weight the Table Down: Use sandbags or weights attached to the table legs to add stability. This is especially useful for lightweight tables.

5. Build a Custom Platform: For a permanent solution, construct a level platform on the sloping deck to place the table. This ensures a flat surface.

By implementing these strategies, you can enjoy a stable and secure outdoor table, even on a sloping deck. Regular checks and maintenance will help maintain its stability over time.