Strettle led from the front as Harlequins landed their 14th Middlesex Sevens title, but first since 1990.
His six-try display during a tournament when Quins beat Leeds Carnegie, Sale Sharks, holders Newcastle and twice-winners the British Army, might have given England manager Martin Johnson a gentle nudge.
Strettle was overlooked for England's 32-strong elite player squad announced by Johnson last month, but the flying wing has not given up hope of an international recall.
Currently part of the second-tier England Saxons group, the 25-year-old is determined to force his way back into senior Test contention.
Despite suffering two serious foot injuries in the past year - which meant he missed England's 2007 World Cup campaign and all bar 13 minutes of their RBS 6 Nations campaign last term - six times-capped Strettle does not lack drive or determination.
He said: "I was a bit unfortunate during the last year, and that is what the coaches said.
"I hope that (sevens) will show people what I am about. Just because they don't pick you does not mean you are any worse a player.
"I don't think I need to prove anything to anyone else, apart from myself.
"Jason Robinson said something which rings true in that you don't become the best player in the world, you become the best player you can.
"With the new (England) system, barring injury, I can't play in the autumn internationals - and the way I look at it you can literally just give the coach no option, whereby he has to pick you.
"If you do that, you are doing your job - and it makes the coaching job easier. Everyone's a winner then, and nobody doubts why you are playing.
"The frustrating part was the injuries - because in rugby, you are going to get that and you can't do anything about it. But, fingers crossed, this is the start of a good season."
Strettle, making his first Twickenham appearance since limping off against Wales in early February, proved the pick of a Quins side that also featured his England colleagues Nick Easter and Mike Brown.
Even the Army, led superbly by Fijian international Apolosi Satala, ultimately had to play second fiddle as Quins collected the Russell Cargill Cup with a 22-12 victory.
Strettle added: "The first thing I said to the boys was 'Look, how many people get the luxury of running out on to the Twickenham pitch?'
"It was a special day for me, and I know it was special for the rest of the boys.
"It is not what about talking or training; it is what you do on the pitch - and with England and Quins, that is the way to answer anyone's critics.
"I see England (seniors and Saxons) as a great environment.
"They expect hard work and they also want honesty. They are not going to tell you rubbish; they will tell you the truth - and that is all you want.
"As a player, you don't want to be phoned up and be told 'We are dropping you because of this,' when you know there is another reason.
"I've never worked with 'Johnno' before. But everything that comes back from the players, singing his praises, is that's what you get from him.
"If you need to know the truth, he will tell you the truth, and I think that is the coaching structure they have got in place."
Quins and the Army had effectively been on a final collision course from round one, but Wales' twin assault on Twickenham fizzled out inside 90 minutes of the nine-hour tournament kicking off.
No Welsh side has won the competition since its launch in 1926, and there was precious little to cheer this time around as Newport Gwent Dragons and the Ospreys both suffered first-round defeats.
The Dragons, far more organised than their fellow Welsh challengers, lost 28-19 to Irish - while the Ospreys never remotely threatened to take off during a 26-5 loss against Sale Sharks.
The plate competition for first-round losers was won by Saracens, who comfortably contained Northampton's challenge.