Hey PaPond -- glad to see you back! We've missed you.
Anyway, I'm on my fourth season with a floating dock made with about fifteen 55-gallon blue plastic drums. We just tightened the caps as tight as we could get them. We did line the threads with teflon tape before inserting them.
During very cold weather, I do notice that the drums suck in a little bit.
Other than that, so far, so good.
However, due to legal constraints, the blue food-grade drums are getting harder and harder to get.
I need a second dock for a pond we built last year. I'm thinking about ordering the foam blocks from Menards. Home Depot says they have them, but when I call or try to order, they don't appear to be available in our part of the US.
