A day after his eight iron snapped in half after he hurled it onto the rock hard ground in frustration, Schwartzel added a 68 to his opening 75 to get back into contention for a second major title.
At one over par the 2011 Masters champion was just three off the clubhouse lead held by playing partner Lee Westwood, world number one Tiger Woods and Sweden's Henrik Stenson - and left hoping for some assistance from tournament organisers.
"Given that I'm going to be climbing up the leaderboard I hope they will water the course tomorrow morning [Saturday]," Schwartzel said with a smile. "I don't like it when it starts becoming that much luck, because that's what it is.
"When it gets this crusty and you're working on balls bouncing....with six-irons going at 280 yards, but they're bouncing at 210. How do you judge that? It becomes a bit of a lottery.
"You don't know what's going to happen and you need to be able to play like we played this morning [Friday]. That way, you can still control your golf ball and quality shots get rewarded. But when it gets like this afternoon [Friday], you can hit good shots and you're going to get all sorts of results.
"And it's not exactly fair in my eyes. (But) if I win, I'll be kissing this golf course."
Schwartzel revealed he hit several drives of more than 400 yards and a six-iron 280 yards as he carded four birdies and just one bogey, but it was a change of equipment which made the biggest difference.
"I changed the putter and it really gave me some confidence," the South African added.
"It's the same (style of) putter but with one of those long grips, a bit more weight. And it made quite a bit of a difference."
As for his unintentional change of equipment on Thursday, he added: "It was just an instant thing. I didn't think what I was doing. I'm not really proud of it.
"When you're playing under so much pressure, and you're expecting so much of yourself, it's just a reaction that just comes.
"I've done it a few times in my career, but never, ever broken a club that way. So it just shows you how hard the ground is, the vibration that obviously went through it."