This year I had an issue with the turret moving, while my 12 year old son was using it. We were heading up to where he had shot an elk. The turret had spun about 3/4 of a turn, just from it rubbing on his pack. I had been using the scope coat that comes with the RS1.2, but after shooting the elk, it was stuffed in a pocket. I am going to try the larger O-ring, and maybe some elec. tape on the knureled turret. But I will be getting the S2H scope or two also.
What I have done for quite a few years, is put a thin piece of tape on the turret, that you can see at a glance if the turret has moved. The tape I use is from one of those Brother label makers. It sticks really well, the first one I did over 5 years ago is still in place.