There are some rules that people experienced in pot pipes follow, one of them is not to make or buy a pot pipe that is too short. The reason for this is because it can get hot and it can burn the person smoking from its lips. It also means the lighter will come to close to the face and hair when lighting the pipe. It will also make the pot smoke in the lungs harsh and hot because it does not have enough time to cool before hitting the lungs.
There are also different bowls on the pot pipe, there are ones that are large enough to take a few tokes off of, which means it can be shared or there are also pipes that hold one hit. This means when its lit it has enough pot in it for a good hit and that makes it a personal pipe.
When smoking pot the stem of the pipe should not be to long, this will make it to hard to smoke from an it will also make it impossible to fit in a pocket to carry around. That is one of the benefits with the pot pipe is the fact that it is small and can be carried around in pockets and purses without being obvious.