when throwing big baits 1st make sure your reels brake blocks are in before you move to the "tension "knob,as this knob is meant to take up side to side play on the spool more than a cast control,2nd slow down your cast action,and come over the side rather than over head,this allows a more gentle arch in the rod thus reducing a chance of breakage,from the 2 o clock position you can speed the cast up to point of release at 11o clock. 3rd your sinker must lead your bait not the other way around ,meanin if your bait weighs 110g the sinker must weigh 150g this will stop the helicopter action and by clipping the bait it makes a huge difference as your sinker/bait combo is more in line reducing air friction= more distance.The Gp guys can join me for help ,I do alot of casting at Homestead dam with Yusaf from western accessories,pop in at waft boksburg fridays/sat to make arrangements with me and I will be glad to help you.I will bring some bonnies/makkies and we can cast the real thing...as the others have said practise practise practise
regards
Dennis