Which of the following is NOT a recommended practices for sling usage?

The statement regarding the use of crushed links is the one that does not align with recommended practices for sling usage. Crushed links can lead to reduced strength and compromised integrity of the rigging system. Using equipment that is not designed to handle the stresses involved in lifting operations undermines safety and can result in failures during use.

In contrast, the other practices are essential to ensuring safety and efficiency in rigging operations. Using correct rigging angles helps distribute the load properly and minimizes stress on the sling. Inspecting slings prior to each use ensures that any wear and damage are identified, thereby preventing accidents due to equipment failure. Properly connecting slings to the load is crucial for maintaining control over the load during lifting, further emphasizing the importance of following established safety protocols.