Since my group is small and we haven't been around long, we only have one audio recorder. What we usually do is use it for EVP sessions that last anywhere from tne minutes to and hour or more depending on the location. Then when we finish with EVP sessions, we will leave it in the room that seems to be most active, or the one that seems to be the least active, the theory being that because we are in the most active area investigating, the spirit/entity may retreat to the other area(s).

I have no problem going over hours of evidence. I mean, yes it does get monotonous and boring sometimes, but that's when you take a break and go back to it a few minutes later. And for me, the chance to catch something is what keeps me going even when I've gone through 4 hours of evidence with nothing.

I also have not caught much as far as EVPs on video recorders. I think this is because the audio recorder is more sensitive to sound than the video recorder.

First let me make clear that these are my opinions based on my experience and not meant to suggest anyone else is incorrect in what they believe.

I am always impressed with those who are honest in their comments about what they do. In reference to this question is the admission that you find the reviews very tedious. Yes they can be but there is seldom anyway around this if you want to be thorough. One thing “they”, almost never tell you is that Ghost Hunting is long hard work for little if any reward other than the social aspect. Which is one reason I stopped hunting years ago and only investigate these days.

EVP sessions should be performed using all the means available to you. That means by all the equipment you have that will record sound. One reason being is that even two identical recorders will not record identically. We always use several devices and no less than 2. Now understanding that I believe that EVP is exactly what is implies. An Electronic Phenomena that appears to be a voice and NOT spirits. That said; my reason behind multiple recording devices is that you may catch something here or there on one or the other. However, should you catch the exact same sound, voice, etc., on all of them then you have something that is likely not a glitch or random anomaly.

As far as your questions. Yes you should have them run through the entire hunt. Remembering that Ghost Hunting is just that. You are hoping to catch something from anywhere. It is just like game hunting. You obtain as much knowledge of the prey you are seeking. Then you go where there might be something you are looking for, hoping to catch one. Same for hunting ghosts and if you don’t cover the whole hunt you may miss something.

If the long hours of listening bother you there are some things you could do to ease the tediousness. If you use an audio program instead of just listening to the recordings you can see where something spikes and just isolate & check those points. If you don’t use a program, digital recorders have many tracks. Shorten your tracks to say, 15 minutes to make it easier for listening.

Keeping in mind of the two types of EVP you can catch; physical and paranormal. Video should afford you the same result as other recorders. If you leave a hand held recorder in one spot for any length of time you might want to place a small travelers clock in view also to help with identifying times for easy reviewing again and again. I have also used one of those cheap digital clocks for sight impaired people that says the time every hour when leaving a recorder for long periods unattended. I myself also use a basic tape recorder without microphone and placed in a sound proof case to eliminate any outside physical noise. This makes it real easy to pick things out but has a few drawbacks too.

Well there’s my 2 cents for what it’s worth.