It helps you attain more height than you normally would in a jump. This is useful, because it allows you to reach or cross over things in a more efficient manner. For example, you have a wall. Perpendicular to the wall, there is a fence about up to your head. Normally, you would have to jump and pull yourself over the fence, which would take 5 or 6 seconds (depends on skill level). Now, if you incorporated the tic-tac, you would be able to get enough height over the fence that it would be possible to do a lazy or speed vault over, significantly reducing the time it takes, and increasing your "flow".