Ok, I can do it over time when I'am bored. Please tell me how it works
EDIT : Spent some time working on a new looting method for wines and sped it up quite abit.
Withdraw 14 buckets, withdraw 14 clay, walk to water source (lumbridge basement sink, edgeville well, falador east well), fill up buckets, use buckets on all clay, fill buckets once empty, return to bank, deposit soft clay, withdraw 14 clay, use buckets on all clay while at bank, deposit soft clay, withdraw 14 clay & repeat the process.
I prefer lumbridge basement, since it has the shortest walk distance between water source & bank.
Edit:
When using lumbridge basement, you use the chest for banking.