Yes that's the way I do them (We have mostly ARF's in our Hanger)

I measure the thickness of the element to be pinned and carefuly drill the holes from the underside making sure that I have drilled through the actual hinge (I use an old style of hand drill for this - one of the ones that uses a geared crank to turn the drill) but make sure that I do not drill all the way through the top covering - This way the plane still looks OK without the ugly pin showing.

I use Epoxy (instead of CA) to hold the pins so that the excess epoxy seals the opening where the pin is inserted.