Should I Progress from OR with MiniMal?

Hi all. Been surfing 18 months with my 7' 6" Roger Cooper minimal (my 2nd wife). Happy to ride the line, bottom turn (fore and back) and make most of the waves I paddle for. I surf South West Wales, UK and I'm 6ft 1', 12st 8lbs and reasonably fit. Still need to work on my style having videoed myself and watched it!
Now, I'm struggling to find out via various forums what my minimal can do - most surfers i see ride the line and that's it - no cut backs, floaters etc. Is that because the minimal will never do that, or is it due to the ability of the surfers I watch, or maybe the minimal will do it but most surfers have progressed to shorter boards?
So I guess what i am trying to find out is whether i should continue with my minimal or move down to a shorter board?
Do you think there are other things i should be trying to 'master' on the minnimal before looking at going shorter?
If you think a shorter board is the way to go can you make any recommendations? What sort of size should I look at and what type of board - the fish is mentioned a lot which seems to give a load of speed but will it allow me to drive up the face and cut back?
If i end up with 2 boards in the quiver, when would you choose to use a minimal over another board - what conditions dicate which board?
So many questions, sorry!
Now, I'm struggling to find out via various forums what my minimal can do - most surfers i see ride the line and that's it - no cut backs, floaters etc. Is that because the minimal will never do that, or is it due to the ability of the surfers I watch, or maybe the minimal will do it but most surfers have progressed to shorter boards?
So I guess what i am trying to find out is whether i should continue with my minimal or move down to a shorter board?
Do you think there are other things i should be trying to 'master' on the minnimal before looking at going shorter?
If you think a shorter board is the way to go can you make any recommendations? What sort of size should I look at and what type of board - the fish is mentioned a lot which seems to give a load of speed but will it allow me to drive up the face and cut back?
If i end up with 2 boards in the quiver, when would you choose to use a minimal over another board - what conditions dicate which board?
So many questions, sorry!