I should add that this session was the first time I have gone left in the pool. My previous session was a right hand wave and as I am reasonably happy with my take off now I decided to move on to Trimming. After about 20 waves I don't think I got on rail at all.
Was it me, the small wave or the board volume. Without any OMBE insights I decided to try a left wave for a change. I found heading down the line difficult, I either surfed or fell off the back of the wave.
But when I played back the video I just thought while I was lying down trying to get behind the surfer in front I actually managed to momentarily get on rail.
Thanks for commenting Graham, Alessandro and Scott I am going to go get on my bosu ball right now.