Without drishti, the discipline of being in a group may help you focus more strongly, or alternatively, members of the group may distract you. Also, if there are powerful meditators in the group then they may lift the 'vibe' of the meditation room, making it easier for others to meditate.
With drishti, whether someone who is in a yogic state is giving you drishti, or you are in a yogic state and giving someone else drishti (including "conducting"), then the experience of blissful energy can intensify considerably. Sometimes it can go the other way and become hideous - it all depends on the quality of the drishti! The most powerful experiences I have had have been where is a drishti interaction / connection between two souls who are both in a yogic state - I assume that the BKs would class this as 'Yoga with others', and denigrate it, even though their systems promote such psychic connections on an everyday basis (in a way I have not encountered anywhere else). Personally I miss the drishti and conducting from my BK days - I don't miss much else.
There is another factor relevant to the meditation experience: the atmosphere of the place of meditation. It is far easier to meditate in a room which has been used effectively for this purpose over a period of time - the spiritual energies accumulate. I have found most BK meditation rooms to serve well in this respect, also Buddhist meditation places, Hindu temples, and even some Christian holy places - one of my most powerful meditation experiences to date took place in the little chapel above the Guadalupe cathedral in Mexico City - interestingly, another took place in the living room of an old psychic Catholic mexican lady, where meat was being cooked and eaten on a daily basis ... (I remain vegetarian, but not so convinced of the BK dogmas on that issue)
Mr Green wrote:I was what they call an instrument, a surrendered teacher. I did all this stuff. I sat on the Gaddi conducted Yoga, read the Murli had golden light coming out of my forehead all that stuff. I don't believe for a second I was channeling anyone or anything. I was told by the Dadis I was a powerful yogi, I was asked many times by Dadi P to sit next to her and conduct meditation in Abu.
Mr Green - how do these statements square with your treatise on channeling in the wikipedia pages? What were you doing when you were conducting, if it was not channeling? If you were not channeling, then you were not conducting IMHO (many of the BKs that 'conducted' were IMHO not conducting at all, but just sitting in Yoga - or in many cases without Yoga ... ).
I do agree with you though, Mr Green, that "these powers are within us" and not gifted to us by God or other spirits, but there were clearly (in my experiences) other beings involved in some of the BK shenanigans, and some of these were IMHO bodiless beings. I had conducting experiences when some being was trying to manipulate my face and speak through my mouth - in these cases I always resisted the invasion ...