nifty idea

So I'm sure quite a few of you already know this trick, but I'm gonna post it up anyway because I think its cool. First off you need two sections of pvc pipe about the length of your truck bed. Second you fill them each half full of water and cap off the ends. The result you get is, when you launch, the water all goes to the rear of the pipes and gives you better weight transfer to the rear wheels. As speed increases, the weight will even back out. It's a cheap trick to maybe shave a few tenths of a second off lap times.