Generally, you don't want to gobble. That can be dangerous if other hunters come hunting you thinking you're a real tom.
Usually yelping like a hen is the preferred call to lure a tom in. Throw in some cutting if he's hot and some soft clucks and purrs if he's coming in closer. If he's close but not in sight, some soft leave scratching imitates a feeding hen and he's likely to come looking for her.
To attract toms, you want to sound like a hen.
A gobble call can help locate another gobbler, but it's kinda risky in the woods.