Thanks for all the suggestions! Using the TACAN at 90° seems to put me in the groove everytime, even though its quite a bit before the stern of the carrier
A little confusing when all documents and tutorials say to turn when you see the round down of the ship, but this will always make your groove times excessive (well for me anyway) which from what I can gather can have a serious flow on effect for those in the pattern behind you.
Whatever works I guess!