Please critique my home front-end alignment method

I don't have a way to know how many degrees I'm turning the wheels. That's why I'm just going full lock and comparing the two directions. From what I've read on here, if I understand correctly, I can't get too much caster with factory arms so I'm just doing this in an attempt to make both sides equal.
You could pin the metal Yer using fer the tires to turn on and take Inkzall "Milwaukee tools" and draw out ° "degrees' with a Speed Square....