Works on any difficulty. A hole shot is when you cross the white line, generally after the first turn, in first place. At the beginning of a race, before the gate drops, hold
(clutch),
(gas), and
. After about five seconds, when the music gets intense, let go of
and you should take off quite quickly.
Try to take a line on the inside of the first turn to zip by the other racers. If you are not in first place leaving the first turn, hold
(rewind) for a second and try again - rowing will not affect your ability to get the achievement as long as you use it before any rider crosses the white line.
Do this fifteen times and the achievement is yours.