Here is a little video I made on a cool feature from the new Polar Bird Hub ice houses. It really helps cut down time on moving spots quick with your pop up!
If you are referring to hole location you can cut new one wherever you like it just told the floor in half.
The floor is the main reason I would buy this one over others.
The floor is my favorite part of mine. I highly recommend the Polar Bird shelters. Most people who are skeptical of the features find themselves falling in love with them once they get their hands on one. I sold all three of my flip over shelters and now own 2 polar birds.