First, let me say that I now pin every plane (because of how I fly, fast and furious-check out my user name, I call myself that on purpose). Trust me, it only takes one hinge failure to change your mind about pinning them.
On a ARF pinning with a pin cut to length from the under side with a drop of CA would be a cleaner installation. ANYONE DONE THIS??????????????????????????
Yes, but I go the extra mile. I drill a small hole thru the bottom, making sure not to go all the way thru(stopping at the top). I then cut toothpicks to length, insert them, add a few drops of ca(cannot believe the wicking action I get), let dry. If I plan to use clear monokote/ultracote to seal the hinge, I then use a paper punch to make some small circles of same color monokote and apply them over the pins first, otherwise I omit this step if I use the same color monokote to seal the hinge.
Nice, neat and effective...
p.s. - I got this idea from this forum (I believe it was Cafeenman who has a good how-to on his web site).