If you are flying a 40-60 size plane, and you use THIN CA, I think the pins are not necessary, but if it makes you feel better, by all means use them.

I think the CA hinges got a bad rap when they first came out because too many guys used medium CA on them (or maybe some OLD thin CA). I know one guy that this happened to, unfortunately he totaled his new plane on the first flight (totally pilot error, nothing to do with the hinges). I was there, when he started ripping it apart to scavenge parts off it, and when we removed the control surfaces they came out WAY too easily, and each one had a little scrap of balsa stuck to it (I am attaching a drawing to give you an idea of what it looked like). This was the result of using OLD, thin CA that had thickened a little. It didn't have the ability to "wick" itself into the slot.

Now maybe others have had bad luck with them, but in their defense, let me tell you this: a few years ago, I was scavenging parts off of a recently re-kitted plane, and I (remembering the previous example) decided to "Test" the hinges. Pulling as hard as I could (I am 6'2" 245lbs... no lightweight) I WAS able to separate the elevator from the stab, but not without destroying the elevator in the process.

MY PERSONAL conclusion... I'm never going to worry about CA hinges again.

PS... DRILL THE WICK HOLES!