Question on a JD 945 MoCo

I read through the owner's manual for my new-to-me JD 945 mower and it talked about how to mow corners on the headland laps, but said nothing about using the swing function to mow the body of the field.  How many laps should I take on the headlands to have enough room to make the turn when I'm mowing the center of the field?  My mower has the two-point swivel hitch, if that makes a difference.

 

The last center pivot that I ran was a CaseIH 8312 (nice mower) and you had to have 6 laps on the headlands, but that mower had a shorter tongue.

 

Thanks in advance, Josh

Question on a JD 945 MoCo