Tron: Removing all holes in mid

I HATE Tron, ('cause I'm a real tryhard) and because it's filled with SO many holes in middle. You can easily get bow-spammed and egg'd off the map. :[
So, I was stuck with a bow spammer camper and a random person, not knowing what they'd do: they were both on their islands. I was at mid. I decided to cover most of the holes at mid, to reduce the chance of being bow spammed off the map.

Soooo yeah, I had nothing to do basically. Had me-self a little lovely hut for 5 minutes waiting for someone to make a move, no one did anything. x)
I then got bored and said, ''To pass time, imma just cover most of the holes. Helpful and a time killer, better than doing nothing in a random structure.''
As I built most of the middle back, the girl ran to another island as the camping bow spammer ran to her island; then put down a lava bucket under me and tried to kill me. (Missed the lava, died.)
The last person was just looting every single island. Every time she loots most islands, a refill comes up. 4 refills later, this is what ended up happening:
Any how, I didn't care much. As long as she's not ruining my stupid idea, didn't care much of her not helping me and looting every island.
10 minutes or so passed, and I ended up with this: She was so nice not to bow me off <3
I then asked what did she wanna do, because I got bored and it's hard to completely wipe out the void in a map if no one is helping me. She said she didn't mind, and asked what did *I* want to do.
Proceeded to answer I wanted to kill her if she messed with my thing, or give her the win if she was nice enough not to do anything (helping would've been appreciated, but eh.) and then started to build some weird structure.
I continued some building since I had nothing else to do, was asked to come up to her weird tower thing. So I did, and the view was really nice:
This is what the point of the weird structure was:
And so I did. She was just too nice ^ - ^
I kinda wish I completely wiped out the void but, too much work for 1 person. I used probably about at least 10 stacks or smth for this, don't remember clearly. I just know I ran out of blocks about 3 times. Thanks myrtlehorserider for not ruining this!