Concrete walls... how do they work?

update
http://i.imgur.com/rAWm8tKl.jpg
embiggened: http://i.imgur.com/rAWm8tK.jpg
Did some figuring and refiguring
We need another sports based event so I can get some better entrances.
I placed the practice whacking snakes near the bases so when I send Homer on his 1hr. job to whack pretend snakes he has a nice audience. I'll make a .gif of it sometime.

this is fantastic, nice work neighboreeno!! i love it!

i can hear the (mechanical) roar of the crowd now...

Brilliant idea! Makes me smile just thinking about It.

Freakin' phenomenal!