Use whichever call you feel most confident with... The calling does not have to be fancy...All you really need to imitate is a basic hen yelp... It's nice to be able to make other calls, such as the whistle or kee-kee, but that's just gravy.. If you can do a simple yelp, you can call turkeys, spring or fall... Keep it simple...Hot, excited calls like cutts and cackles are not necessary...
After a scatter, the birds will usually start calling on thier own after a few minutes...If you hear a turkey calling, try to imitate it with basically the same cadence..
If no birds call right away, have patience..Just give a string of 6 or 8 yelps every few minutes and sit tight..Sometimes it takes them awhile to get over thier fright and start to respond...Other times, they may start calling within minutes after a scatter...