I agree but we would have died without them moving my 160 gallon tank. It was 4 of us with 2 cups, so two guys were supporting the tank with hands. Putting the tank down on the stand safely is where the cups really come into use without worrying about smashing your fingers. So yes it can be done without, but I wouldn't dare try it without them. And trust me I was scared as hell, worried about the suction giving way!!!