Torquay manager Martin Ling bemoaned his side's poor display in the 5-2 home defeat by Gillingham in League Two on Saturday.
The Gills swept ahead at Plainmoor through two first-half goals from former United forward Jo Kuffour, but Torquay hit back with two goals in the opening six minutes of the second half from Chris Robertson and Danny Stevens before a foul on Kuffour enabled Luke Rooney to put Gillingham back ahead from the penalty spot.
Rooney's box-to-box run teed-up Frank Nouble for Gillingham's fourth goal before Chris Whelpdale's last-minute cross-cum-shot flew in to complete Torquay's misery.
Ling said: "It's nowhere near good enough and we were not good enough every time a one-to-one defensive situation arose. It was not only our back four but Nouble and Kuffour were too good for us and their movement caused us problems.
"It just wasn't good enough and I told the players that in there (after the match). The question is do we go with three centre-halves and change the system? I heard the fans calling for Mark Ellis and I think he has got every chance next week to be honest.
"We can't keep pulling rabbits out of the hat, although we nearly did it again, 2-0 down and then we got it back to 2-2. But you can't keep doing it."