Alright so I have a customer who is having some work done but I am just watching from a distance to see if the work is being done properly and also to see if what I have learned online is correct. But the Dry Stack wall will be about 3' and about 30' long. This wall should be built using a base of 10" level that, then dig 2' behind the wall and fill as its built up with clean stone? Am I on the right page here? Please help out looking to learn.