I use the same prescription as my usual single vision distance. At the typical pin-to-eye distance, my pin is not blurry. I use a lens + fiber, so the target is a bit blurry anyway. Better target blurry (it is at least still smooth) vs pin blurry, because that risks turning into a starburst. No verifier or clarifier used.
During my latest eye exam, I purposely asked the optometrist to write an "archery prescription", which is to subtract 0.25 to the right lens. This acts like a mild clarifier, but since it is right up against the eye instead of at the peep, there will be no minification (image shrinkage). I haven't gotten these glasses made yet, though.
Some suggestions:
get glasses that have a small nose-bridge spec so you're better able to see thru the inside corner
may want to purposely shift inwards the pupilary distance on your aiming eye
may want to increase the "base curve" on the lenses to reduce barrel / peripheral distortion
do not get polycarbonate lenses, which have a bad abbe value (chromatic aberration)
make sure the nose pads and ear hooks are well adjusted so the glasses don't slide down your face after a while.