Mark Hughes added his name to the list of Barclays Premier League managers calling for the introduction of video technology after a debatable penalty in Manchester City's 2-1 defeat at Wigan.
Vincent Kompany's close-range strike had cancelled out Antonio Valencia's spectacular opening goal before Amr Zaki scored a penalty which Hughes felt referee Steve Bennett was wrong to award.
"Referees have days when they don't perform as well as they should and that's true for players, managers, coaches and alike so we understand that," Hughes said. "But all we ask is that they get big decisions right."
He added: "I think it [diving] is part and parcel of the game and the foreign players are a bit more adept at it than the British-based players.
"The ability to draw fouls in some places is seen as a skill so he's obviously very skilful at that. I didn't used to fall down quite as easy as that.
"On occasions referees get the incidentals wrong and sometimes you scratch your head, but what they have to get is the key decisions right and the key decisions were not made correctly and that had a direct impact on the result I felt."
Bolton manager Gary Megson had similar feelings after his side's defeat to Manchester United on Saturday and Hughes added: "Goalline technology is something that has to be brought in because it is easily implemented.
"The means are there to do it now so why it has not been I have no idea.
"Video technology, or technology in other parts of the game, is a different subject and possibly will impact fundamentally more on the game as we know it.
"But certainly for key moments, or key decisions, that have to be made which can directly change a game why not use the cameras?"
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