Watch the video on it.

Well, I just noticed there isn't video of it.

But here's how it's done.
When the goo product reaches the conveyor belt do not attach any goos, instead you have to kick them with ivys to get them to pass under the belt and through the hole on the right.
It's really annoying work, and hard.
Once you get 5-6 goos through the hole and on to that floating structure use the balloon to kick the structure to the pipe. If you have more the 8-10 goo products on the structure it will be to heavy to kick.