BERNARD Jackman hailed the Dragons' comprehensive Guinness PRO14 win against the Southern Kings as job done – but criticised his side for not being more cutthroat.

The Rodney Parade region triumphed 29-13 in Newport thanks to scores by wing Hallam Amos (2) and hooker Elliot Dee (2).

It was their first bonus point win in the league since April, 2015 but the Dragons, who climbed to fifth in Conference B, scored the last of their tries in the 42nd minute.

Head coach Jackman lamented his side's inability to turn a 29-6 scoreline at the start of the second half into a hammering of their South African visitors.

"I think we missed a massive opportunity in the second half to show that we are ruthless and have a killer instinct," said the former Ireland hooker.

"We didn't have that, which is disappointing. It's a work-on for us, at least we are going to win and learn.

"They were there to be put away but after we scored the fourth try our celebration showed a team that hasn't had a lot of those [bonus points].

"After that we just didn't get back on our next task and because we want to play a wide, wide game we continued to throw it around, which is absolutely fine, but our skill set let us down and handling errors kept giving the Kings opportunities.

"We are happy with the result but I just think we could have given the crowd a really big display; we did some nice parts but didn't play for 80 minutes and that is frustrating.

"Where we are coming from [a bonus-point win] is good, but we want to get somewhere and we want to get somewhere quickly.

"We don't want to go through step one, step two sometimes we want to jump two or three steps on the ladder if we can, and tonight I thought we could have but didn't.

"The Scarlets were 15-10 up against the Kings at half-time and didn't let up, they kicked on and we didn't have that. We need to make sure we grow that, whether it takes a year or a month.

"That's part of the process and we've got to make sure on Monday we crack on."

Next up for the Dragons is Friday's clash with Cardiff Blues at the Arms Park as they hunt for a first derby win since triumphing in the capital on Boxing Day, 2014.

They will be without on-loan scrum-half Dane Blacker against his parent club but are hopeful of Charlie Davies countering that blow by returning from a head injury.

Centre/wing Adam Warren (hamstring), wing Jared Rosser (hip), lock Rynard Landman (calf), hooker Gerard Ellis (cheekbone) could be back in the mix for selection.