Ewan Rosser insisted the players were confident of securing a victory at The Wern, even when they were trailing in the final minutes.
Pooler had led Merthyr at the break after Rosser added to Joel Mahoney’s earlier try with Matthew Jarvis converting both along with a penalty on his return to his former club.
Liam Wiggins had initially given the hosts the lead and a Josh Lewis penalty followed by a Dan Wall score saw them retake the lead in the second half.
But with the clock ticking down, Pooler refused to go for the posts and opted to continue with the scrums before eventually playing the ball out wide to Amosa Nove to score a last-gasp winner.
“We were pretty confident to be honest,” said winger Rosser.
“For a lot of the game we felt like we had the space to play and we noticed they were defending very tight.
“So we said we didn’t want to go for the points because it was definitely on to go out wide and we took it and scored.
“We don’t go away from teams, even when we were behind going into the last couple of minutes, we were still in the game and wanting to fight for the win and we are doing that every week and we won’t stop.
“The confidence is building and we are towards the top of the table so we just want to push on and keep getting wins.
“When we chose the option to scrum, it’s because of the confidence we have in the group.”
The victory was Rosser’s third appearance of the season and his scoring run continued with another try to help Pooler on their way to a fourth consecutive victory.
“That feeling is definitely starting to build,” he said.
“When we first came into the league nobody really knew what to expect but we have proved we deserve to be here and we’re not really fearing anyone.
“I’m happy to keep scoring, I’m gutted I didn’t have a few more but I’ll take the one.
“I just want to keep them coming, that’s what I’m in the team to do as a winger.”