I have my computer base attached loosely enough that I can easily twist it on the handlebar so that the computer isn't showing. I do that on a lot of rides. Sometimes I'm focused on trying to improve time or distance or speed, other times I just wanna ride. I always take the computer with me so that I can get my stats at the end of the ride, but if I decide after a mile or so that it's just a "play day", then I just flip it up out of sight. And, actually, I've sometimes found that I do better on those rides, when I'm going purely on the feel of my pedal stroke and breathing rate.