Possibly?

Thinking about modding my 65g superskimmer, due to it isnt the greatest, ive been looking at skimmer designs the past few days and i think i found one that would be REALLY simple to do im just not sure on one thing which hopefully you guys can answer, heres what im thinking about doing. it has the same body, and everything the only im not sure about is the disc on the bottom, does that rotate? or is it fixed, i know i could just pop the bottom of my skimmer off, put this plate in there, and drill a small hole in the side for my pump to go threw, what do you guys think?? am i nuts?