the 30 second sharpie check before you buy another stone
if you're new and the knife still feels dull after a bunch of passes, try this before ordering a coarser stone:
color the bevel all the way to the edge with a sharpie.
make 3-5 light passes per side at the angle you were already using.
look where the marker came off.
marker gone near the shoulder but still black at the apex = too shallow.
marker gone at the apex but black behind it = too steep.
marker gone across the bevel = angle is close enough, now work until you can actually feel a burr.
takes less than a minute and it tells you if the problem is angle/contact, or if you just haven't spent enough time on the first side. way better than counting strokes.