ARGYLE head coach Paul Mariner has credited the importance of research in the success of David Stockdale at Home Park.
The Fulham goalkeeper has agreed to stay with the Greens for another month on loan after Tuesday's excellent display against Swansea.
Fulham boss Roy Hodgson still has the right to recall the Yorkshire-born stopper but the new deal has now been completed, subject to Football League ratification.
"We have to do our research pretty closely on players and David's doing exactly what we thought he would do," said Mariner.
"He made some vital saves on Tuesday and he comes for the ball, and kicks it a fair distance, so he's an attacking weapon, even though he's a goalie. His distribution is very good. We're pleased with him and by all accounts, he's pleased with us.
"It depends on Roy Hodgson and [Fulham goalkeeper coach] Mike Kelly. They're happy with the situation at the moment and so are we. It depends on recall. If they get injuries in the Europa League, David will go back."