Join Date: Jul 2018
Location: Mid-Buckinghamshire, UK
I am only being practical here; I have no expertise. My view is that it is adequate. That is surely so in straight riding, anyway. In a corner, the force acting on a rider is through the body in line with the spine as the bike pushes onto the rider. There is no sideways force affecting the rider that I am aware of....unless you are coming off the bike, of course, when one fixing or two will make little difference. I had a very slippery surface on my seat at one time and the only slippage was under braking, i.e. forward. Few, if any, on here agreed with me when I said that I wanted to use velcro (it was not possible to do that) for seat fixing, so others may be along shortly to refute the above and 'wise me up'. (PS, I do, however, never quite forget the insurance company which may take against some mods). All IMHO, of course.
Just do it! (I did: 2017 Rebel 500; 2014 MT-07)