I use the original shoulder belt setup. It's a little restrictive but it's supposed to be. Not uncomfortable. Not as convenient as a three point but they work. I pulled them out and for awhile ran some racing harnesses but they gave me a hard time at tech because I didn't have a submarine belt so I went back to the original setup. You should have seen the look on my Mitsu-boy ride-along instructor's face when I showed him how they worked...Priceless