If the sub grade soil contains any of the materials listed above, I recommend the seam tape and glue method. By utilizing staples for installation involving the harder subgrade materials, the staples will bend due to the subgrade’s unpliable characteristics and will subsequently cause the turf seam to move. The results will be visible to the eye, so try to avoid staples if the subgrade materials are listed above.
If the soil consists of a soft dirt-like loam, sand or silt, I recommend using the seam tape and glue method, as well. Seams will move over time due to the soils integrity, especially when there is sub-surface groundwater intrusion.