[DonRotolo]

Depending upon the way the rod is made, you may find that tiny splinters of glass fiber come off the surface of the rod - anyone rubbing a hand along the rod will find out in a split second, and remember it for weeks.

It may be valuable to coat the surface with epoxy, Plasti-Dip, or even electrical tape if this is happening.

If you do drill in, in addition to the advice above about epoxy in the hole, also try to select a spot that low stress. For example, at the tip it'll be fine, right in the middle where the rod bends most, it may be less so...