Bishop, who missed the opening 15 matches of the season after undergoing open heart surgery in the summer, has returned with two goals to kick-start Pompey season.
He netted the opener against the Robins and then slid through Josh Murphy, before Callum Lang made it three unbeaten for the south coast side.
Harley said: "He's made one and scored and is a constant threat. He's a player you would hate to play against but if you have him on your team it is like having a mountain.
"You are always backing him to score a goal or pop up with something. It has been huge to have him back as he was a big miss. Now he is back it is important to capitalise on that.
"The last couple of years he has scored a hell of a lot of goals, he almost guarantees you goals.
Denne historien er fra December 08, 2024-utgaven av The Football League Paper.
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Denne historien er fra December 08, 2024-utgaven av The Football League Paper.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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RAVENS FLY TO STORMY SUCCESS
ANDY Woodman admitted Bromley's win over Accrington is a game his victorious side 'will never watch back again'.
U'S TAME THE A FAST START
GARETH Ainsworth was dismayed with Shrewsbury's defending as his side were beaten by a rampant Cambridge, in a game which included a goal in the first minute of both halves.
SUPER BLUES' JAY AT DOUBLE
JAY STANSFIELD bagged the plaudits for Birmingham with a brace as they hit back to beat ten-man Barnsley in front of 5,000 travelling fans at Oakwell.
MATT'S ODE TO JOY FOR DETERMINED CHAIRBOYS
Royals in recovery with boss departed
IT JUST EXPLODED OUT OF NOWHERE - IT WAS WILD!
SHEFFIELD United v West Brom? For fans of a certain vintage, it's a fixture that can only conjure one memory.
ROHL RAGES WITH HIS SLOPPY OWLS
DANNY Rohl ripped into his Sheffield Wednesday side after they were held at home by Preston.
ACE KEEPER KAMINSKI IS THE BIG DIFFERENCE
LUKE Williams insisted that his Swansea City side could well have left with all three points after being denied victory by home keeper Thomas Kaminski.
Kolli is Marti's new Ray of sunshine
PROUD QPR boss Marti Cifuentes is hoping Rayan Kolli's maiden senior goals prove to be \"the first of many\" after the youngster played a starring role in the victory over Norwich.
FIRST WIN FOR FRANK AS LIONS ARE TAMED
COVENTRY head coach Frank Lampard felt his players took the game by the scruff of the neck after half-time the Sky Blues.
EUSTACE SALUTES BATTLING ROVERS
But a lot to ponder for Selles
