DO NOT under any circumstances do a flood dose of ibogaine alone! You absolutely have to have constant supervision for 3 days (the peak effects). You will be utterly unable to take care of yourself. Trust me, as someone who has done a flood dose at home... I had supervision sometimes (the first 12 hours and periodically thereafter), and I got into some serious issues because I thought I was with it but in fact I was completely out of it. It doesn't matter how good you are at taking care of yourself on psychedelics. Ibogaine is different. Please heed my warning. I nearly lost my job and I could have hurt or killed myself or others. I may have driven, or that may have been a dream. I did talk to my neighbor, fortunately he's cool but he considered calling an ambulance because I was so incoherent (I remember this and I thought I was coherent). This was on the third day. Had I wandered farther, I could have easily ended up arrested, hurt, or institutionalized temporarily. Also on the evening of the 3rd day (a full 72 hours after taking it), I went over to a friend's house (he was my supervision and came to get me after I emailed my boss thinking I needed to tell him about the ibogaine) and I thought I was fine and hanging out normally but in fact 2 of my friends were literally scared I was acting so crazy and the rest had no idea what I was talking about... basically I thought I was there but 2/3 of the time I was dreaming while awake and interacting with the world based on my dreams, and not based on reality. I had no awareness of this at the time whatsoever.
I'm a person who handles their drugs well, I have had +3 trips at work before and been totally fine. But ibogaine is a different beast.
A lower dose is different, you can take lower doses on your own as you will be coherent when you are up and moving. But on a flood dose you will be more out of it than you've ever been in your life, and you will not realize that you are.
Read my report for more info... really long but worth reading if you're going to do ibogaine:
http://www.bluelight.org/vb/threads/723353-Ibogaine-(flood-dose)-First-Time-Into-The-Flood
You don't need a babysitter per se, you just need someone to corral you once you start getting up and moving. Had I had someone to stop me from going outside alone, emailing my boss, possibly driving, etc, I wouldn't have had any negative ramifications whatsoever from doing it at home. I recommend ibogaine at home but only with proper supervision and planning. Don't think of it as a babysitter that your ego thinks you don't need, think of it as proper precautions for undergoing an experience that is life-transforming and that will be the most intense and overwhelming thing you've ever done. Ibogaine is unlike anything else. You don't retain awareness that you're on a drug, and in that way it's sort of like datura (but it's nothing like datura in effect, just in that way). At least, that was my experience. If you do it alone at home, you may end up with serious or life-threatening consequences.
I also can't recommend strongly enough taking your dose as a mixture of TA extract and pure ibogaine HCl... the other alkaloids in the plant (that the TA extract has) make the difference between a comfortable, fully immersive and relaxing feeling trip and a jangly, painful, stimulating trip.