Well, I tried two times, first with 2 seeds (it's safer starting at low doses), and the experience at eyes closed was a black and white fractal tunnel (like these time-travel animations), and with eyes open some color changes (walls) and distortions. I was searching for a emotional experiencing but that time wasn't that.
The second time (4 seeds) i like to describe as follows:
1. Heavy body load, a lot of red arabesques that appears as a curtain, I wasn't able even to see clearly through them.
2. With that body load, I keep my eyes closed because was more useful to "survive" the load. The time-travel tunnel of my first experience doesn't appeared, instead, a lot of "situations" with me there were created. First in a dark forest fighting with a knight. After fought, I start singing icaros to get away and I started to fly from there to the place I was singing, it was beautiful.
3. The side effects disappeared (or the visual were stronger than that. For me, the same), some creatures with red eyes appeared from the dark, i understood that yopo wanted me to fight my fears and I did, starting laughing to the creatures, then I understood that the fear is completely manageable (not only in the trip, but in my life). Singing another icaros and others situations appeared. I opened my eyes and there was nothing interesting (visual distortions only, when the solids appears as liquid). Obviously closed my eyes again aand then I was flying through a forest over a giant bird, the indigenous people of that place Wave at me, then I entered the bird and I was that bird, the world were falling apart while I was flying and finally I found with a being in a powerful energy center (I thought it was the center of energy creation).
Then some visions that I don't remember clearly, until arrived baseline.
Yopo could teach you a lot of yourself. As you can read, I can see yopo, instead of ayahuasca or pure dmt, could bring absolutely concrete visions. I talked with my self in a upper conscious level. Hope you too.
Peace
Sorry my bad English, I hope you can understand my writing.