McCoist felt his side struggled to cope with the 3G surface at Palmerston Park in the Ramsdens Cup quarter- final with Queen of the South on Tuesday.
And he revealed that Scotland left-back Lee Wallace had picked up a neck injury in the 3-0 victory because of the controversial covering.
It is the latest knock a Gers player has picked up on an artificial surface; David Templeton spent over two months out after a game against Annan at Galabank last season
The Light Blues gaffer, like many coaches and managers, is a traditionalist and prefers competitive matches to be played on grass.
In fact, his charges have not even TRAINED on the plastic pitches at Murray Park this week in preparation for the trip to Angus.
And McCoist will select the players he thinks will adapt to the conditions underfoot the best in the League One meeting with their League Cup conquerors tomorrow.
"There is a doubt about Lee Wallace for this game," he said. "I think his problem is a reaction to the surface in midweek. He has stiffness in the neck.
"I don't want to criticise the surface, but it is different. I accept the reasons why these surfaces are here. They provide income and involve football in the community, which is great. But it definitely affects our team selection and I'd imagine it affects managers and coaches of teams who play on grass every week when they have to go to these places.
"Our medical staff thought David's injury last season was something to do with the pitch. But there's no use getting het up about something you can't have an effect on.
"As long as the parks are legal to play on, we are duty- bound to play on them whether we like about it or not, so there's no use mumping and moaning about it. We have to get on with it.
"Players can pick up injuries on any surface, I'm aware of that. But that type of surface is probably more suited to young players' development more than anything."
McCoist added: "We haven't trained on the artificial pitches and I can understand criticism for that decision, but I go the opposite way - if you are worried about players getting injured on that surface, why train on it?
"I can understand the argument that by training on it you get used to it, but if it increases the risk of injury then I would try to take that out of the equation by not training on it.
"It certainly forces us into a serious rethink about the players. Anybody who saw the game on Tuesday will see that we have got players who naturally don't look comfortable and don't play to anything like their full potential on those surfaces. That's not a criticism, it's just my opinion."
McCoist, who is hoping to have Lewis Macleod available, does not believe his side's midweek outing in Dumfries will have prepared them for the Station Park pitch.
"None of the surfaces are the same," he stressed. "Our boys are of the opinion that probably Broadwood is the best one we have played on. But then that is only their opinion.
"You could go to another team and they might have another opinion. They might think Queen of the South's is better or Montrose's is better or Annan's is better.
"We felt Forfar's was actually one of the better ones as well. Strangely coming from a 2-1 defeat after extra-time.
"But, do you know something, it doesn't effectively matter what we think about it. We have got to be very careful that we don't sound as though we are criticising or looking for a cop-out because we are not doing that at all.
"All we are saying is they are with us, we will deal with them, we have to play on them, but I would suggest that we are more comfortable playing on grass."
Rangers slumped to a 2-1 defeat after extra-time to Forfar in the League Cup back in August when they were unable to field their new players.
And McCoist, who can play all of his summer acquisitions now the signing ban has expired, is hopeful the Ibrox club can avoid a similar result tomorrow.
He said: "I had to laugh when I heard Dick (Forfar boss Campbell) say we would have the title wrapped up by Christmas. I'm just surprised he didn't have us winning it by Halloween!
"But we want to win. I don't like the word revenge, but they gave us a sore one up there. I know we couldn't play all of our players, but fair play to them, they knocked us out and they deserved it.
"I have watched the game a couple of times and we missed an unbelievable amount of chances that day. Fair play to them, they turned us over. But we want to go up and continue our good record so far in the league."