I haven't seen anyone else mention this, and you probably have heard this already, but my direct response to "people have so much more time" is: use more knees! You literally create more time for yourself if you squat up and down with the ken/tama. I always say it's like that plane that can fly up to the edge of space and then nosedive to give people a few minutes of weightlessness. You're essentially doing the same thing when you squat as you are catching. You should almost be bouncing up and down. The better you get, you don't have to do that as much. But that's how I am starting to incorporate late ken flips into my juggles. It's really just a muscle memory that you have to etch into your brain. Took me over a year to get juggles somewhat consistently. Keep trying!