That's a great question, it really depends to be honest, for beginners I personally hold a little and signal in the direction I intend to turn then turn, I give a pre signal. The issue tho I have seen many people who say they are going to do this not actually check their heading afterwards and actually still be going straight. So if u have an experienced group or are new to leading it is good to turn straight away. It doesn't need to be a sharp turn, but a consistent turn that is clear to read. Depending how many belly and back flyers u have also events it, more bavkflyers u can turn quicker, more belly flyers u need to give them time to follow as the formation can get away from them quite qjickly
