To extend liner life, choose high-quality materials and prepare the pond base carefully. Remove debris and add a protective underlay to prevent punctures from stones and roots. Temper the liner by unrolling it in sunlight, then position Pond liner clark rubber so it covers shelves and depths with generous overlap for anchoring. Work out air pockets and large wrinkles as you gradually fill the pond. Secure the rim with rocks or coping and conceal the liner edge with planting for extra protection from UV and physical damage.