Bonding is for different potentials, which do not necessary have to come from energized equipment
You should have the following:
A copper ring around your pool, buried 4-6" in the ground. That ring should be tied into the metal uprights at 4 equal points around the pool. Technically you are not supposed to use self tapping screws to attach the lugs to the uprights, as they do not make enough contact. You are supposed to use a nut and bolt. I'm not sure how you do that after the fact. I attached my lugs with stainless steel bolts and nuts before installing the uprights.
Anyway, the copper gets buried around the pool, and attached at 4 points. You also need to connect the bonding lugs on any electrical equipment (pumps, SWCG, etc) to this ring. You also need to bond the water to this ring. You can bond the water in a variety of ways - via a plate in the skimmer, through a section of metal piping, or sometimes via a heater. You also need to bond anything metal that is within 6' of the waters edge. A ladder, a diving board, a gazebo, etc. It all gets connected together.
You do not want to bond to plastic on your uprights, you want to bond to the metal. My uprights have plastic "shoes" as well. You could slide the shoe up, attach to the metal underneath, and slide the shoe back down, or you can do what I did and just bond into the leg above the shoe.