Now, I have done evocation pretty much by the book (well not with Lions belts and virgin spin thread, but with more of the whole show than most people muster) and I tend to agree that it provides more poltregeist phenomena than say using Kraigs Watchtower as the circle and forgoing the traditional tools in favor of your stock ritual tools. Certainly, I have experiences things like Garner talks about. Screams, winds indoors, lights that are visible to several people (one of whom was in my living room while I was in another room performing the rite).

At a seance I experienced airborn lights and indoor winds circling around us. The work was done at my house, so it was not set up ahead of time.

At a ritual we had the electric blow out, the candles go out, and light descend over us. This was Sandalphon who spoke in a voice that all four of us could hear. I should note that there is nothing more to this kind of rite than some simple prayers and a meditation – it is not even supposed to produce this kind of phenomina.

An evocation of Asteroth outdoors using mullein stalks as candle/incense and an evocation that consisted of nothing but a simple invitation to come and chanting her name over and over again produced a cloud soi thick that it obscured my house that was just 20 feet away/

Simply practicing an Enochian call in my living room in Philly produced nightmarish visions for my wife.

Simple offerings to Takshaka and Varuna (two Naga Kings) on hunter mountain produced rains which stopped on command when we commanded it.