Merco Marine™ has 10 rub rail profiles. We designed our P style rub rail with a sloped bottom half. As boats rock up and down they tend to glance off ours instead of tearing it off the dock. That is just the beginning. Our flexible PVC will not crack, rot or deteriorate when exposed to extreme temperatures. It is unaffected by oil, gas or saltwater and has UV inhibitors to prevent yellowing and deterioration from sunlight. We even add a fungicide. Besides all that, you can’t beat the price.