Hey guys!

I have installed subd, and it is mega cool!
I am wondering if SketchUp along with subd can handle this comfortable chair?

https://www.youtube.com/watch?v=V4zYxRXFKD4&t=231s

If not, what should i do with the holes I'm getting when working with Vertex tools.
Everybody is amazed by vertex tools but i don't get it.
When i extrude with ctrl+left mouse i get a hole.

Cheers