Rotary buffers push product to the outside of the circle so I alway put a blob in dead center but I buy the LC pads without the donut hole as I prefer pads with the backing plate glued on. It's worked for me for years. But pro's do it different, they lay a bead on the paint, about 12-18" long and in one quick motion they pickup the bead with the pad tilted in a way where it catch the center of the pad. You do it while the buffer is just starting so it picks up speed as it goes. Takes practice and I don't use my buffer enough where I care and doing the way the amatuers do it above is perfectly fine, to us it's not about getting it done 5 minutes quicker, it's to see how much we can get on our clothes.