Just sit there with the fronts spinning I imagine
Once you get proficient at driving it's possible to judge the point of wheel spin and exit junctions at quite a rapid pace accelerating quickly without losing all traction or sitting there spinning wheels.
Goodness knows how you think a motorcyclist with one wheel drive 200 bhp, a tiny contact patch and 170 kg vehicle can leave a junction without either spinning it up or flipping it over and still do 0 to 60 times of 2.3 seconds.
I've had a number of 4WD drive cars but I still found that my front wheel drive 8V was beautifully balanced on smooth dry roads.