I don't know if this helps but I just saw an old pool where the decking was removed and they want to install a new liner. The supports all around the pool are ( I believe) aluminum and they are directly buried in the soil. The EC is going to use UL approved diect burial lugs that are rated for AL and bond each upright post ( about 40 of them), then connected it back to the filter and the pool ladder and cups will attach to this pool bonding grid.
