There are two ways to make this easier.
The first is to develop your own sense of timing. I believe I pointed the cursor at the 9 o'clock (left-most) spot and waited until just a little bit before the Pokemon I wanted was at the 3 o'clock (right-most) spot. This gave me a 90% chance of getting what I wanted (human error and all that), and helped me with both the Neon and Survival Colosseums.
The second, if you lack good timing, is just to fill your team with weaklings. Maybe use a rental pass. I don't really like the thought of doing that, though.