Lol, my advice for salvia is do it alone, but in a place you can't harm yourself or break anything. I find other people's input in the salvia state to be very confusing, and I also find myslef holding on the the concept of their presence and sometimes transposing it as the presence of entities. If yuo HAVE to have a sitter i'd find someone with the maturity to not interact with you at all, or laugh or make any sound. Their sole function is to help you reintegrate on the way out, especialy if you forgot you took salvia. With a little practice you can tell yourself that you are not going to loose your train of thought and ego, and actualy pull it off. For spiritual work, halucigenic doses are not required.