prefer to snap the stabilizer bar into the board and try put it into the key or do you put it into the key and try to snap it into the board?
Depends on the clips and the board.
On something like an IBM, you have to attach the wire to the key and guide the wire into the clips as you push the stem down. And on the weird ones like the XT spacebar, you can get into weighted thread loops and such.
A very small flat head screwdriver can be very handy.
But, speaking theoretically, I really wish that wires would just go away completely.