Winfried Schafer lamented a "crazy goal" in Jamaica's 1-0 Copa America loss to Paraguay, but said his side had to improve their abilities up front.
Duwayne Kerr came out to deal with a long ball from Paraguay's Victor Caceres, the goalkeeper's headed clearance going straight at the awaiting Edgar Benitez - and the ball deflected off the attacker's thigh and looped back into the unguarded net.
"Two matches and no goals for us, you can see our problem," Schafer told a news conference.
"We lost against Uruguay via a free-kick, we lost today due to a crazy goal.
"Our strikers have to move to give more options for the midfielders, defenders ... I hope I find a team that can play like this against Argentina.
"This tournament is for us to find a very good team for the qualification matches in August, September."
Schafer hinted his side might have to take a leaf out of conquerors Paraguay's books, as Ramon Diaz's men played several corners short in a bid to meddle the Jamaican defence.
"We have many free-kicks in the first half, and corners," the German coach said.
"Only one situation was dangerous for Paraguay - we need more surprises with our free-kicks, new ideas, not every time the ball has to go towards the goal [face].
"I hope, in training, we can discover a new idea against Argentina."
He added: "The second half was the same as our first half against Uruguay.
"When you want to play in a high level, at a Copa America, you have to always play 100 per cent, fighting.
"First half, we didn't play good football."
