Sorry, I don't "get" the game right now...it basically seems to work on it's own? did not have to do anything....
Viewing post in Oh, Balls! A mobile web game comments
If you collect one of the blue diamonds, you can launch yourself again - it's mostly just a satisfying little time waster, but you do actually have control :) you can tell whether you'll be able to launch yourself by the colour of the outline - if it's yellow, you can't do anything. If it's blue, you can drag across the screen again to get an extra burst of speed