To ensure proper fill in a back-dragging process, what technique can be applied?

In the back-dragging process, correctly positioning the bucket is crucial to achieve an even and proper fill. When the bucket is positioned adequately, it allows for better control over the material being moved, ensuring that the fill is level and compact. This technique enables the operator to utilize the bucket's shape and design to its fullest potential, scraping off the right amount of material from the surface and distributing it evenly.

Proper bucket positioning involves angling the bucket appropriately to allow it to make full contact with the ground surface. This ensures effective movement of material and correct layering, which is essential in construction and grading tasks. Additionally, having the right positioning allows for a more precise application of fill, reducing the likelihood of missing areas or overfilling, which can lead to uneven surfaces or instability.

The other choices might play roles in different contexts but do not address the specific technique that directly influences the outcome of the back-dragging process in the same way. For instance, using a mix of materials may be relevant in certain applications, but it doesn't specifically ensure proper fill in the back-dragging itself, while adjusting hydraulic pressure and the frequency of back-dragging will not substitute for the importance of bucket placement.