On a try

[Ia-Ref]

A good practice is to ask every time there is a choice of where the ball will be put into play from prior to the ready-fo-play.
Do not assume the ball will be in the middle of the field.
As metioned prior, once the RTP has been sounded, the ball cannot be moved.

I do not want to run into the case where a coach says he was not given a choice and the ready-for-play has sounded.

Granted, most of the time the middle of the field will be ok. Just make sure by asking.