How does everyone do their wheel alignments when they're too cheap to pay for them

I am not that good at them, and previously used stringlines to try and measure them, but got the irrits and have tried something different this time.
I bought four pieces of right angle 40x40x2.5 steel, and had them cut to 500mm lengths (Usefully, only a little greater than the diameter of the wheels 165x70x10 wheels and tyres at 490mm, so it turns within the guard without touching anything). I drilled them to fit onto two studs of the wheel hubs (not diagonally to avoid the CV nut, with the holes drilled 72mm apart).
The car was jacked up, with axle stands under each hub so that the suspension is in compression.
I then used a stringline through the center of the car from front to rear as a datum, and used two 1500 mm long rulers to measure toe on front and rear relative to the datum. This way I had all four wheels aligned to the datum, with the right amount of toe on each. Doing the camber was easy, I turned the hubs until the bars were upright, and used a large square to measure camber angle, with the gap between the bar and the square being the opposite angle on a camber=500mmxArctan(gap mm) calculation. I did the camber on all four wheels before I did the alignment as it will upset the toe if I dial it in last.
Anyway, that was all a bit painful, how does everyone else do it?