So this is my first year closing a pool. I have an ABP and went out and bought a tractor tire tube to serve the purpose of a pillow. How do you all tie off your pillows? I purchased 3 tie down D-Rings and plan to bolt them to the rails and then secure the rope to those. I really don't want to drill holes in my rails, but can't come up with a more suitable idea. Please give me some ideas!