The Staggies started the new term on fire, collecting seven points from the first nine available.
But since kicking-off the campaign with back-to-back clean sheets as they registered wins against Motherwell and Hamilton, Stuart Kettlewell's Dingwall outfit have only managed one other Premiership victory.
That victory over St Johnstone in Perth was coincidentally their only other shut-out so far and Donaldson knows his team need to stiffen up at the back.
The big defender has watched out Clarke has transformed Scotland's fortunes by making his team first and foremost hard to breakdown - and believes the same approach would do wonders for County as they prepare to welcome Hibs to the Capital.
He said: "It's a big frustration. The gaffer mentioned it before the Betfred Cup game against Arbroath on Tuesday night that he was looking for a clean sheet so to concede again, albeit to a decent free-kick, was really disappointing.
"But we're looking to get back to how we were at the start of the season, hard to beat and shutting teams out.
"I look at how Scotland are performing right now under Steve Clarke. They are build from the back with some solid foundations and that's definitely a model that we want to base ourselves on.
"We want other teams to have to work really hard if they are going to beat us so that Scotland blueprint is what we're looking at.
"The basis of any good team is the ability to keep clean sheets and once you do that, you can build from there.
"There is a consistency element to our performances this season.
"You can't have weeks when you're on it like we were when we got our last clean sheet at St Johnstone then the following week go to Aberdeen and put in a first-half display where we could easily have shipped four goals.
"You need to have more consistency at this level and that's something the coaching staff are really drumming into us."