Approaching from a different angle

If I am testing on the durability of the bag, then I should test on how many skewers can be poked through it and the amount of water that spills out.



What I did was that I drew squares measuring 2cm by 2cm on the zip lock bag.










I pierced the first skewer in at the bottom row left most square.













The second skewer went in through the next alternate square













And the 3rd one the next alternate square.







In the end it turned out to be this messy and undesirable zip lock bag.














However, poking at spots gave me another idea. Does the distance between the spot where the skewer is poked and the center of the zip lock bag affect the amount of water that spills out?