I will continue hatching Turkey eggs until my hen stops laying. Since this is my first year with turkeys, I don't really know when that will be but I anticipate September or October.
I have two Bators for this purpose. Because I only have one hen, I only get about five Turkey eggs each week. Since you aren't supposed to keep the eggs longer than 7 days, I start a new hatch every seven days. At the time of lock down, I move those eggs to the second bator. They will have hatched by the time the next batch needs to be moved to the lock down Bator.
It starts getting a bit complicated because I also throw in chicken eggs but they need a week less of incubation time. Apparently turkeys need someone to teach them to eat and chickens come out pecking and scratching.
I can't wait until next year when I will have enough hens for a full Bator.