I have way too many calls for sure... I use diaphragm calls mostly but occasionally use my box call or a pot call. Some days they just respond to certain calls better. Every turkey is different, so how much is dependent on the bird, but I call quite a bit if I think I can get away with it, I prefer to know they are coming and from where. If I can't get a bird to move at all, at some point I'll decide to shut up, or be a hen that starts going away and see if he will come investigate.