When I used a ROS I tried both and settled on OCB (boat buckle). However, if there was any loose bark, irregular bark I always had a problem with shifting steps when weight was taken on/off them and neither one really solved that issue. I crap canned them (ROS) as soon as Klemz came out with his DIY platform and I have never looked back. I SOMETIMES will set 1 step off to each side of my current platform (predator) using an OCB on very large trees - but I am not standing on them and stepping on/off to cause the problem mentioned above. I set them, and then I may use one of them if I need to move a bit to get full 360 shooting and it is a one and done thing. 99% of the time my platform opens up 360 shooting for me and thus there is no need. Over the years I was using them, I lost at least three shooting opportunities due to a ROS shifting as I was moving into position - that was enough for me to say BYE BYE as soon as a better mousetrap was built..
