If you have ground your grain into a dust and want to avoid doughballs - dough in with half your normal strike water at below the gelatinisation temp of barlez (55C). And then add a couple of jugs of coffee kettle water to bring it up to exactly your mash temp.
You'll find that your grain doesn't ball up, and the mash is all "floury" and cloudy ... then the magic happens when you stir in the boiling water: suddenly it hits conversion temps and goes clear. That's the flour turning to maltose - yes, pretty much in front of your eyes.
Try it some time. Just dough in with hot tap water, stir the porridge
D) and infuse boiling water in until you hit the sixty somthing you are aiming for - while stirring.
Bonus is, you get your little 5 minute protein rest for free, and you can be wicked accurate on your mash temp without bothering to calculate any strike stuff.
I hear a lot of commercial breweries (they also grind to dust for efficiency reasons I hear) do the same thing.
EDIT: if you want to get cunning you can add your first boiling water infusion to bring it to say, 62C ... then after 40 minutes you can add another to bring it to 70C for 15 minutes, and not have to apply any heat - pretend you are mashing in an esky and can't apply heat, like a "real brewer". :lol:
You can hit close to 100% efficiency using this method.