Ireland secured a 31-0 victory over Singapore, with Nikki Caughey beating a tackle and racing in for the first try inside two minutes which she converted herself.
The speedy Murphy Crowe charged through from her own 22 for her first try, following good work by Caughey and the hard-working Susan Vaughan.
Murphy Crowe added her second soon after and the Clanwilliam clubwoman, one of the players who came through the IRFU's talent identification programme, completed her hat-trick just after the half-time hooter.
The Irish girls profited from another quick turnover as Murphy Crowe was fed out wide and she evaded two defenders on her way to the try-line.
26-0 in front at the break, Ireland tagged on a fifth try early in the second half when another of the squad's newcomers, Martina McCarthy, slipped out of a tackle and darted over halfway to touch down.
In their second and final pool game, Ireland took on Japan and they edged into an early lead thanks to a second minute try from McCarthy.
She showed good pace on an arcing run from inside her own half to score to the left of the posts with Caughey missing the difficult conversion.
Blackrock's Katie Fitzhenry had a busy presence around the pitch in the scrum half role, and Ireland managed to absorb some Japanese pressure before pouncing for a second breakaway score.
Fitzhenry used scrum ball to send Caughey charging up the right wing, she held off a defender and popped an inviting pass back for Niamh Ni Dhroma of Buccaeers to canter in behind the posts.
That gave Ireland a 12-0 buffer, but crucially the Japanese struck for a try just before half-time as the Irish defence finally gave way.
Japan grew in confidence as they dominated both possession and territory in the second half and they pieced together four more tries as Ireland's challenge petered out.
Skurr's charges were made to pay for some costly turnovers in and around their 22 and a couple of missed tackles out wide allowed the Japanese to build score after score.
The 27-12 defeat was a disappointing finish to Pool D for Ireland, with the result setting up a Plate semi-final against Kazakhstan.
Early injuries in that game hampered Ireland's chances and the strong-running Kazakhs took the game on a 24-14 scoreline.
The girls in green produced a more consistent performance against Brazil in the 7th-8th place play-off, but the South Americans capitalised on some turnovers to emerge with a 20-7 win.
Canada went through the tournament unbeaten, defeating France 24-0 in the final, with the Japanese losing 28-10 to South Africa in the 3rd-4th place play-off.
Ireland will now regroup for the fourth leg of the IRB Women's Sevens World Series in Guangzhou, China, which takes place next Saturday and Sunday.
IRELAND WOMEN'S SEVENS Squad (Hong Kong Sevens, Hong Kong Football Club, Happy Valley & Hong Kong Stadium, Friday, March 28):
1. Shannon Houston (Blackrock/Leinster) (capt)
2. Martina McCarthy (St. Mary's/Talent ID Programme)
3. Niamh Ni Dhroma (Buccaneers/Connacht)
4. Aisling Naughton (Talent ID Programme)
5. Elaine Ryan (Talent ID Programme)
6. Megan Williams (Saracens/Exiles)
7. Amee-Leigh Murphy Crowe (Clanwilliam/Munster/Talent ID Programme)
8. Katie Fitzhenry (Blackrock/Leinster)
9. Nikki Caughey (Belfast Harlequins/Ulster)
10. Siobhan Barrett (Tralee/Munster)
11. Laura Lee Walsh (Talent ID Programme)
12. Susan Vaughan (Railway Union/Leinster)
IRELAND WOMEN'S RESULTS:
Pool D -
IRELAND 31 Singapore 0, Hong Kong Football Club
IRELAND 12 Japan 27, Hong Kong Football Club
Plate Semi-Final -
Kazakhstan 24 IRELAND 14, Hong Kong Football Club
7th-8th Place Play-Off -
IRELAND 7 Brazil 20, Hong Kong Football Club