I have heard of parking but trying to manage it was another thing for me :lol I like that the holes are easier to stitch so I might try using this method again. I will limit it to 2-3 colors though so I don't get too confused. ;P
I'd never heard of this before! One of the ladies at our craft group leaves the threads at the back and we're always ask her how she keeps them from getting tangled. I might suggest she parks on the front. ;P