There are different quality CA hinges. After you've seen a few brands, you notice that some seem thicker than others. Truth is, some look dowright thin.

We've had a number of CA hinge failures in the last year at our field. Everyone I had a chance to autopsy showed the same thing. Every one of the hinges that failed were thin ones (some didn't have the fuzzy laminations) and had simply ripped along the hinge line.

Not a one of the failures was a fault of the CA not holding the hinge flat in the balsa. This last year, there wasn't a single case of a CA hinge pulling out that the pulled out part wasn't completely covered by balsa that had been pulled out of the airplane. You can't blame gluing technique for that. There wasn't a single case of a hinge that showed only partial penetration of the CA.

It appears that ANY gluing technique works more than adequately.

What does need attention is the quality of the hinge.

Do I drill? nope. The idea is convenience. If I was going to go to the extra effort of drilling, I'd pass on the CA hinges and simply use Hinge Glue and Dubro hinges. Matter of fact, I do just that on my "extra nice" models because it takes very little extra time over CA hinging and is just as easy.