Cannot use aluminum hardware with treated lumber, the copper in the treated lumber will eat aluminum for breakfast!
Lots of good ideas everyone. I have a bunch of sizable concrete whatevers I made while the pond was empty in the bottom of my pond, but no heart to drain it just to hook up some wood. I know darned well if I drain the pond to put in the dock we will have the longest drought on record. I will just need to learn to swim with a wrench and hammer.
I may just give in and convert to a floating dock.
