Hey everybody, I'm a fairly new TD at a high school. We are heading into One Acts were we have to set up and strike our sets in less than 5 minutes. For our show we are going to be rolling out 3 4'x8' platforms that will be 1' off the ground, we are going to be putting some locking casters on the bottoms of the platforms so they don't move around while actors are on top of them, and so that they can roll on and off easily durring the 5 min set up and strike. When I took over as the Scenic TD I inherited a large amount of various castors, however they are all getting old, where the bearings have filled with dust, and hair, and they have all been painted over many times making them very hard to use. So I am looking for some suggestions on the best type of locking casters, preferably the cheaper the better since its for a public high school on a small budget. Thanks all!