I have a stationary dock with post that were set prior to filling so I am not offering advice with experience to back it up. With that said, I think that if you want to set posts as you are suggesting, you should create as wide a "pad" as possible. Std 5 gal buckets will settle and sink more than something like a 5 gal livestock feeding "tub". I haven't measured, but a 5 gal bucket is probably 12-14" wide and you could get a livestock tub that is 20" or even 24" wide and still provide the same weight and volume. Check out a local farm store for some.


J Waters
Dam'd Waters Farm
2/3 ac dam'd stream pond
BG, HBG, RES, LMB, YP