Hey guys im working with my 6 month old pup on his sit command. He sits on a whistle extremely well at heel or anywhere 5 feet around me. Although if he’s out in the field he will not stop what he’s doing and sit if i blast the whistle and he’s more than 20 yards away, i have not worked with him much at far distance so i do not expect him to do so. But im was wondering if you guys have any drills that could work on this with him. Like i said he sits on a whistle every time when he is at heel or close by. I just need to work on in the field sits at far distances. I am not using a e-collar yet i am waiting to get him fundamentally sound with all of his commands before using it. Any Ideas and thoughts would be greatly apprechiated.