User blog comment:Mathmagician/Wall of Flesh Solo Guide/@comment-4707419-20111225230601/@comment-4674838-20111226061440

If you want to use a Gravitation Potion and a Minishark--go for it. It has the advantage of taking far less time than building a bridge, but that's about it. The bridge has far more advantages than that. It makes movement easier. It makes aiming with your ranged weapon easier, which in turn makes the battle go faster because more bullets are hitting. It makes killing the boss over and over again easier. It makes staying alive easier. It reduces a number of risk and skill factors associated with Gravitation Potions. I could go on and on. In the end, the battle itself is just easiest to execute when you have a bridge.

The goal of my walkthrough was not to help people beat the boss as quickly and with as little effort as possible. It was to show people a strategy where if they do X, Y and Z before the battle, I can give them a nearly 100% guarantee that they would be successful. I could not give that same guarantee with a Gravitation Potion.