Rugby converts Mark and Steve Brandon loom as match-winners for Nowra-Bomaderry in Sunday's duel with Jamberoo at Kevin Walsh Oval.
After starring for Shoalhaven in the Illawarra rugby union competition for the past few years, the Brandon brothers made a successful switch to league in 2014.
Mark is Group Seven's leading try-scorer with 19, while Steve is also among the competition's best finishers.
The pair are sure to keep the Superoos guessing on Sunday.
"The Brandon boys are just freakish players," Wellington said.
"They're powerful and skilful and have that explosive speed. They can pull something out of nothing."
The Jets were grounded at the bottom of the ladder for the first month of the season before soaring into top five contention with four consecutive wins.
Last week they almost became the first team to beat premiership favourites Warilla, holding the competition leaders to a 30-all draw.
"We're coming off a good performance against Warilla and hopefully we can bring that to the game against Jamberoo," Wellington said.
"We're really improving as the season progresses.
"We've got a lot of individual players that have a lot of skill, but we're starting to gel and play better as a team.
"We're linking up and completing sets and just doing the basics well, and it's starting to show in our games. The big key is that we're starting to believe in ourselves. We brought that good game against Warilla, but there's still patches where we lapse a bit with errors and fatigue, so there's definitely room to improve."
The Jets should only get stronger when Kurt Quinlan and Matt Rouen return from injury next week against Kiama.
"It's a very close battle for the semis, and as the young blokes get mentally tougher and get that experience, hopefully it'll help get us up into the semi-finals," Wellington said.
Unbeaten Warilla will have several players backing up from Greater Southern Region rep duty when they meet Kiama at Cec Glenholmes Oval. The Gorillas almost suffered their first loss of the season last week, while the third-placed Knights came from 14-0 down to beat Milton-Ulladulla. Shellharbour will be aiming to consolidate second spot when they host titleholders Gerringong. Port Kembla are away to Milton-Ulladulla in Saturday's only game.