For many players the slap hit is one of the first skills they learn and a consistent but powerful passing option.
A major benefit of the slap hit is the consistency it allows, this is because you have a much larger area on the stick that the convenient hit. With practice the slap can also include a lot of disguise and is the main option for defenders at a higher level.
The video below goes through the key technical points required for a successful slap.
It is important when using the slap that you do not take too long for the swing as under pressure you may allow the opposition to make a clean tackle while the ball is loose.
One downside to the slap is the difficulty in controlling the pace of the pass, in places where a through ball is required a simple push pass is often easier to control.