You bleedin' Poms!!
You should be strong enough to fight a fish with either arm
Personally, I cast with my right and fight with my left whilst winding with the right.
Perhaps that seems weird but you will seldom find a Saffa doing owt different
I understand that it makes sense to do so the other way around but I think it is what makes sense in one's head and, most likely, how you grew up doing so and we always used our conventional deep sea rods that way, fought with the left and wound with the right
Ben