I'm 5'9'' and I ride all the way out on my 2012 142 Response so I can't speak to the issue of sliding out... but, I can tell you that ever since I started riding SS I swap out those tall phillips screw heads for little nylon lock nuts. Instead of a screwdriver I keep a ratchet in my bag... way more secure and I don't ever even have to think about them coming loose
Great piece of mind when you ride a lot