The Robins controlled much of the first half but failed to make their superiority count and the Pirates improved after the break, almost snatching a winner.
"We played well in the first half but we were pretty poor in the second," said Town boss Yates.
"It was obviously frustrating but the players have got to realise the importance of it to everybody.
"Everyone wants us to win, everyone cares about it, but some of the stuff in the second half wasn't good enough.
"We didn't get the tempo we wanted after a good first half, when we should have taken a couple of chances. They stifled us and finished strongly.
"We had too many square passes, too many back passes and when the ball was in the box we didn't get the bodies in there.
"Rovers came to frustrate us and they did that, but they were better than us in the second half.
"We are all frustrated but I am not giving up on anything yet because it's still ridiculously tight in this league, so we'll persevere and we have to take our frustration out on Southend on Saturday."
- Sports & Recreation