IIRC, one of the important points of any fast stop/quick stop is to finish up into wind. The entry can be at any point off the wind, and bringing the helicopter around into wind during the flare will add a further 'braking' action by virtue of the roll element added to the nose up. Properly executed, an application of up collective during the rolling turn will be needed, which will really assist the slowing down process. Be prepared for a faster stop than you may be used to, and especially prepared to input collective and pedal to bring in a smooth hover at the finish, otherwise you may well run out of power, pedal and ideas at the crucial moment.
As did one of our instructors demo'ing a downwind fast stop in a Wessex 1, who managed to scoop out on the flare and remove the tailwheel and a couple of feet of the lower tail boom. The RTB and subsequent landing on a pile of sandbags was skillful, but the near loss of the tail fold pin emphasised that an immediate landing out at Predannack would have been a better option!