I went to the website and read the beginners guide. They are apparently created at night, (what's the effi'n point?) but nothing says they need to be finished in one night.

Here is an excerpt:

2. Dowse potential location to establish earth energies. If a formation is located on a powerful ley-line this will satisfy later tests for genuineness, and aid in curative effects, healings, orgone accumulation, angelic visions, benign alien abduction experiences, and feelings of general well-being. WARNING - If the formation is situated contra-directionally to the flow of energy, this may result in the opposite effects; headaches, nausea, temporary limb-paralysis, aching joints, mental illness, deadly-orgone-radiation (DOR) exposure, demonic visions, negative abduction scenarios (memory loss, implant scarring, sore or bleeding anii, navels, and genitals, etc), and general disillusionment. With no condonement by the authors, this may be of interest to satanists.

Nutty stuff!