Alot of folks hate hand blocking, but I have to admit I am a little like n20mstr. Knowing how important it is, I want to take my time and really look/feel what is going on.... the repetition and focus needed give it great potential to become a zenlike activity, I've been a guitarist for 43 years and gravitate towards that kind of stuff.
I usually get some tunes going, to help me down that path. Loud is good.
But for filler work, I like to rough it in with power tools/whatever combination of air file or DA seems to be working, before going anywhere near it with a hand block.