Paul Dickov admits changing systems and personnel can be somewhat of a lottery.
A 4-3-3 system worked superbly against high-flying Nottingham Forest
But Rovers were poor with the same formation a week later at struggling Sheffield Wednesday, leading to a switch back to 4-4-2 against Burnley earlier this week.
Dickov revealed his desire for stability in his side.
But he also said decisions are always made with the intent of hurting the opposition rather than stifling them.
“You want to keep things settled but a lot of decisions come down to what you’re up against,” Dickov said.
“It’s not so much what they can do to you though.
“You’ve got to look at different players and systems to see how you can hurt the opposition.
“That’s what we’re trying to do – we’re working hard behind the scenes on that.
“But we know it’s not going to work every week.
“You can change it one week, it works fantastic and everyone is happy.
“Change it another, it doesn’t work and it’s all doom and gloom.
“We’re coming up against a good team in good form in Leicester this weekend.
“How we line up against them might be different again but what we will do is have a good go at them.
“As long as we’re competing, I’m happy.
“Burnley deserved to beat us on Tuesday night but when you strip it back to the basics and look back at the two goals, they were a penalty and a deflected shot.
“It’s fine lines in football matches.
“We’re constantly looking to improve in all areas to make sure we come out on the right side of those fine lines.
Changes in approach have brought difficult selection decisions to Dickov.
James Coppinger in particular found himself out of the side for two matches despite being one of the star performers so far this term.
Dickov says he expects his players to take decisions on the chin and be ready for the call to come again.
He said: “The squad know they’re not going to play in every single game.
“We’ve asked them to take it like men when they get left out – don’t sulk and spit your dummy out.
“Full credit to the lads, they’ve all reacted well.
“I had a slightly easier decision with Theo Robinson against Burnley because he was still feeling a knock from Saturday.
“We felt it was best to put him on the bench rather than risk him being out for a length of time.”