There are many factors that would affect how you would go about helping optimize healing for a pulled hamstring.

First off, the extent or level of injury would be the major concern. Essentially, how badly was the hamstring injured? This will dictate treatment type and timelines.

Secondly, the cause of the hamstring injury should be investigated. Was it a traumatic event such as a sporting collision? Was is during a run? Are there any imbalances or inhibited muscles that need to be addressed?

So in reality, there is no one way of healing this, or most types of musculoskeletal injury without knowing more about the situation.

Regards,
Dev Chengkalath
http://devchengkalath.com