30 breeder is a large tank so you might wanna add another hide in the middle.
I am currently using two large hides in each of the corners and have a piece of grapevine and the large water bowl in the middle of the tank. Unfortunately there would no room for an additional hide.....
I bought some leaf garlands from a craft store when I saw them in other's vivs. Since I put them in my snake uses them as hides in the full length of her viv.
They're not secured in any way, so you can just pick them out on cleaning day. My snake does move them around, but it's no problem.