Roland ,I will go as far as to say that any cast that uses your hips is one with potential. If you watch great casters,of which this country arguably has the most per capita,you will notice one thing in common ,they all use body rotation .Use your side on stance it is the most simple and basic stance,then rotate your upper body,followed by your hips away from target to a position which make you feel loaded like a spring,dont overdo it ,go to your max,and then come back a little.
Make this your starting point,and just reverse the steps above,uncoiling your hips and upperbody,do not rush this especially with the long rod,let the rod do the work .Its length will give it a bigger arc,which will generate more speed,and let the lead travel faster and go further as a result.You will note a natural weight transition from your front foot to backfoot,and back to front foot during the cast,it neednt be exagerated,especially off the bricks,but it does aid in distance.much like a golf-swing.
If flapped makkie's,or mullet are your preffered cast bait,then make the flaps shorter,and or flap only one side.Dont make the bait to bulky unless it is absolutely necessary,or untill such time as you can cast it comfortably,which I can assure you will come with practice,Fish within your own limitations and compete only against yourself for the time being,become the best caster that you can be,not better than X,Y or Z,,untill you feel confident enough to do otherwise.