As advertised, the raft inflates quickly

Thanks.

Yes. They started falling before that guy even reached the first shelf.

Wind from the raft

So the wind pushed them forwards instead of backwards?

The wind trajectory is from below. As the floaties are very light, they sort of leap forward.
U can try putting a small piece of paper on the edge of a table with a bit sticking out and try blowing it from below. I'm guessing it will have the same effect...Sorry, don't know how to explain well in english..