You're not going to get used to a multiplier by going to a fixed spool; persevere with it. Don't practice with it by going fishing; get yourself down to a pier; jetty, beach or something and keep casting with it with the spool tensioner up quite tight. Ease it off a little at a time until you can cast without getting any overruns.
Remember though that the first part of the cast; when you are loading up the rod, has to be a smooth as possible; try not to jerk into the cast. jerking is what accelerates the spool into giving more line than the sinker is taking, resulting in loops of line building up on the reel eventually causing the dreaded birds nest.
Keep at it; it'll be worth it in the end when you get it sussed.
You're not going to get used to a multiplier by going to a fixed spool; persevere with it. Don't practice with it by going fishing; get yourself down to a pier; jetty, beach or something and keep casting with it with the spool tensioner up quite tight. Ease it off a little at a time until you can cast without getting any overruns.
Remember though that the first part of the cast; when you are loading up the rod, has to be a smooth as possible; try not to jerk into the cast. jerking is what accelerates the spool into giving more line than the sinker is taking, resulting in loops of line building up on the reel eventually causing the dreaded birds nest.
Keep at it; it'll be worth it in the end when you get it sussed.