Nice improvisation, but you can usually pick up a
used Porter Cable DA polisher for another $50-$80. Meg's also has a dual-polisher you attach to a drill which sells for something like
$50 new if you don't want to spend a ton of cash. Seems like a no brainer though considering it's going to take you twice as long for the same results. You also have to wonder how long this thing will last. If you have to buy a new one every time you do a full detail, it doesn't seem worth the headache. I'd rather spend a bit more on equipment that last and known to work.
I'm also a bit OCD. Even with a PC, it usually takes me an entire weekend to do a full paint correction including wash, clay bar, polish and wax.