J. Clarke wrote:

Trick with spade bits--put a piece of tape or something on it so that
you can gage how deep you're going, stop when the point is through, then
drill from the other side and you'll avoid the tearout.

I had read this before, but thanks for reminding me. I want to (try to)
do this for a hole close to the eave where pulling my 6-3 cable will be
awkward enough as it is. "The cable you save today will be the cable
you don't have to utter disparaging remarks over tomorrow!"

Bill