If you do it right, you pull the tube straight down and cover the mouth with your thumb and every thing works dandy. Also, with my PBMafia joyride I shove the tube back in the loop upside - down, that way the round bottom of the tube helps guide it in, and you won't grab an empty tube.
My friend was killed by a throwing star but I live because of D'Eagle - Thalion
The visible spectrum is Rainbows! - Pirate
We're gonna need a bigger hopper - splattttttt