Sexing Turkeys

I'm thinking of adding a few turkeys to our collection of animals.
Does anyone have a way of sexing turkey chicks?
I don't want to get all Toms.
I'd like to get one Tom and at least 2 or 3 hens.
Is there a way to tell by the wing feathers?

I saw a video where a guy said to hold them by the breast/shoulder and suspend them...
If the feet draw up it's a hen...if they extend... it's a Tom.
Another video said to look at the back of the head...
A Toms head will be more square and a hens will be slender!?

Any help or information will be greatly appreciated.

Thanks,
Tom