Well, surrounding a black hole is a quasar, the hottest and brightest things in the entire universe outside of supernovas; so before you can throw anybody into a blackhole for spaghettification, you'd have to quasar-proof them against what is something like 10 trillion degrees of heat they'd have to pass through first. I mean, that probably helps with the execution, but it's the spirit of the matter.
The cloest quasars are billions of lightyears away, which means they existed billions of years ago, but don't now. They're not some compact thing, they huge. Galaxy-sized. in fact, they were probably the precursors to modern galaxies.
What a quasar is, is a galactic nucleus, but there's a large accretion disk of gas an debris, which falls into the galactic center, causing a huge energy output. It's nothing to do with black holes in general, everything to do with how galaxies formed. So, you'd have to specifically be falling into a galactic center black hole that's perhaps billion of times as massive as the sun (far more than an average black hole) around 10 billion years ago. However, you'd die of old age or be killed by the radiation exposure long before you got to the point where you're noticing the space distortion from the black hole.
Also, if you're falling into
such a large black hole, then the
relative force between your head and your feet wouldn't be as great as it would be as if you were falling into a small black hole (large black hole's event horizon is a lot further out), so the subjective force of sphaghettification would be a lot different in a black hole huge enough to be part of a quasar. See wikipedia article on Spaghettification. Tidal forces are highest at the surface for very dense objects. Large black holes have a lower density - since a doubly massive black hole has twice the event horizon, so 1/4th the density.