My last 8×8 floating dock section was built from mostly salvage materials. I’m slowly adding sections until it reaches shore. Unfortunately, I can’t use the cylindrical foam floats as the base of walkways, as they will rotate/spin in the water. (Also, I have plans for the other 2 cylindrical foam sections….)
So this 4×8′ section of floating dock uses two commercial roto-molded dock float sections (48x24x16″), which drove the price up to around $680 in materials. (But I have a decent number of composite deck boards and hardware left for the next (3×12′) section I plan on building. [Yes, every section of my dock will have a different width, deal with it.]