The next step was to remove the old floats. They were HEAVY, mostly fully of water, and all of the bolts were rusted permanently in place. Ratchets worked on some bolts but some required cutting, prying or just general banging until they broke free. I used a hydraulic jack to lift the dock frame section by section and slide the old floats out to make room for the new ones.
My work pictures end there because it got too involved to measure, drill and bolt in the new floats with stainless steel hardware. At the end I replaced nine floats using 36 sets of bolts, lock nuts and washers. Drilling the aluminum dock ate up three specialty drill bits. I tore open eight of my ten knuckles fighting with rusty bolts. In all it took around 30 man-hours to get it done from start to finish!
Many thanks to my dad, Wayne, a retired physician who also happens to be super helpful with projects like these and is willing to work for free!