I generally mount them about 1" below the sheer. I don't know enough about urethane adhesive to comment. I don't mind the holes and visible bolts.

: Can someone tell me the right height, in relation to the sheer, for the
: center of the footpeg rail on a Guillemot?
: Also, looking through the archives I read a post about simply glueing the
: rail on using urethane adhesive. No bolts, wood blocks or holes. Has
: anyone tried this?
: Thanks, Richard.