I have a 500ltr flat tank with one baffle inside a ford connect van. The trouble is one baffle is just nowhere near enough and therefore I sway back and forth so much when driving that sea sickness is a hazard in my van!!! I have heard of the drain pipe trick but on a tank of my size it sounds like a lot of work (and new drainpipe is pretty expensive). Does anyone know of a quick option? Someonw mentioned baffle balls but I know nothing of these. Any help will do as I have one unstable van!!