Two workers here
If we take the throw they stick to me like glue, they are angels, Bella will carry it and drop it where she wants it throwing. Molly just follows Bella, they're never any further than a couple of metres in case throw disappears
If we don't have the throw we're in trouble, totally crazy, walked into next village yesterday throw less, absolute nightmare all over the place in the canal out of it, running further than I'd like, meeting and greeting, eating fishermans sweet corn, rolling in dead and smelly things, eating manure. Molly loves a good game of chase so will if one of her many friends is about, Bella just watches.
If on lead good, at home they pull until they get to the canal / field / footpath, beach, which is only a short distance. But is we're in unfamiliar teritory or a town they pretty much heel all the time.