A quality backing plate is a must. Inferior backing plates will not grip the foam pads and possibly even break during use causing damage to your paint. This flexible backing plate from Lake Country works with all popular rotary polishers from companies like Makita and DeWalt.
The flexible polyurethane material allows the pad to follow the contours of the paint. It also will isolate the paint from the heat and vibration rotarty polishers generate.