Personally I'm a skeptic but if you want to punch holes in any hard-core science types, remind them that Einstein said that time is relative and what your hunting is apparently mass-less. The sure volumes of accounts of paranormal should be enough for anyone curious to do some research.
As for equipment I would say use any thing you can, EMF being popular. As other's have stated don't believe any unexplained anomaly to be something spectacular just note it as evidence and over time you will hopefully develop patterns in the evidence that can be further studied.
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Personally I'm a skeptic but if you want to punch holes in any hard-core science types, remind them that Einstein said that time is relative and what your hunting is apparently mass-less. The sure volumes of accounts of paranormal should be enough for anyone curious to do some research. As for equipment I would say use any thing you can, EMF being popular. As other's have stated don't believe any unexplained anomaly to be something spectacular just note it as evidence and over time you will hopefully develop patterns in the evidence that can be further studied.