Steve McNamara is urging his side to start maximising their attacking threat to ensure they get back to winning ways.

The champions head south on the back of an unfortunate defeat at Hull, where they showed plenty of guts but never made the most of their opportunities.

McNamara acknowledges the Bulls have yet to reproduce the form that catapulted them to Grand Final glory last season but there is no reason why that shouldn't materialise at The Stoop.

During the reverse fixture in round two, Quins hugely frustrated their rivals, slowing down the play-the-ball area, riling the Bulls forwards and preventing them from getting any sort of roll on.

That denied the likes of Shontayne Hape and Marcus Bai the chance to fire out wide and Bradford were fortunate to come away with a draw.

Winning the battle on the ground tomorrow will be paramount against wily hosts, who certainly know how to bend the rules in this area. But McNamara is wanting more from the Bulls in their support play as well and less one-man rugby.

"It's not just a case of hitting the ball up as hard as you can and trying to get up and play the ball," he said.

"You've got to try and help each other and I think that's probably what we haven't quite done. We've worked so hard for each other defensively, scrambling and covering, but offensively we're just working on our own at the minute.

"If we do that then we'll be okay as we've got a potent attacking team when we get forward."

Harlequins caused Leeds some trouble with their off-load game at Headingley but a slow start cost them dear and they eventually missed out 36-24.

McNamara observed: "It was not the fastest game in the world, Harlequins did their best to try to slow the game down and put some pressure on the Leeds offence. They scored points and restricted Leeds for long periods while they are traditionally a difficult outfit against Bradford."

Quins are without the influential Thomas Leuluai a thorn in Bradford's side at Odsal who hobbled off in the New Zealand versus Australia Test last week.

But McNamara said: "We know what it's like losing your first-choice scrum half in Paul Deacon but if there was a silver lining for Quins they've got the timing of the signing of Henry Paul just right.

"Returning against Bradford will be a little bit special for him but we'll be just looking to improve on that Hull display."

Probable line-ups:

Harlequins: Mark McLinden, Matt Gafa, Zeb Luisi, Tyrone Smith, Nick Bradley-Qalilawa, Henry Paul, Luke Dorn, Mark Tookey, Chad Randall, David Mills, Lee Hopkins, Danny Williams, Rob Purdham. Interchange - Neil Budworth, Filimone Lolohea, Pat Weisner, Joe Mbu.

Bradford Bulls: Mick Withers/Marcus St Hilaire, Marcus Bai, Ben Harris, Shontayne Hape, Lesley Vainikolo, Iestyn Harris, Paul Deacon, Stuart Fielden, Terry Newton, Andy Lynch, Paul Johnson, Brett Ferres, Jamie Langley. Interchange - Stanley Gene, Joe Vagana, Karl Pryce,Ian Henderson.