It's probably one of the hardest encounters you'll have in aim duels, it also depends on the style of "dodging" they're doing. Some people go a/d a/d a/d and it's easy to sort of predict that they're going to return to their original position at somestage during their strafing, but alternative means of strafing can often be harder, such as a/a /a/a /d/d /d/d and other pertaining movements - you can either focus on the original a/d a/d strafe pattern and just practice, because it will come up in most duels. Deathmatch will help with that. But for other methods - you have to train yourself to not fire, and wait for them to make the move into your line. Happens all the time, someone stands still, a lot of people wig out and miss a whole bunch - because they're not use to it. But being able to strafe particularly well and under pressure - eg multiple enemies, is an extremely good advantage. It's just about having quite good control over your wrist/hand of small movements when they're strafing, and a combination or solely on waiting for them to come back. If you want an example of both - watch .PhP in deathmatch for CS:S on youtube, prime example of waiting for the other player to make it easier for himself basing it off their ineptitude of lower players.