Loctite on a lockring? I've never heard of that before. Now, I don't skid and never have. But I still don't know why you would need Loctitie. Backing off the cog tightens the lockring. Unless things are so loose to start with that you are stressing and damaging the threads, I see no need. (And that's what chainwhips and lockring spanners are for; tools every shop has.)

Ben - a guy who's been riding these fixie things for 40 years and the miles of (4) laps around the plane

Edit: Trakhak - good point