what is best locater call...or a few different types, im going scouting this weekend and i have a crow call, is that all i should use? also, when scouting....i get up predawn, drive around and just blow the locater call every 100 yards or so? and they will gobble to that and then i know where should be around come april 18 (opener)? should i jus drive on the road and blow the call or should i actually get into the woods....thanks alot

geter