Maybe I'm doing it wrong, but it takes me 5-7 "fast spins" with my thumb to jump four hours. And since I am have to fast spin, there is no consistency/control on when I jump to. Instead of fast spinning wildly to jump hours ahead (and doing it 10-14 times to jump 8 hours, which is ridiculously impractical), i'd prefer smaller controlled movements to precisely scroll ahead. also, as a result of the larger increments, a single fast spin or two would allow you to jump 4 or 8 hours ahead to see the rest off the day.