Move them at night while they are all inside.
Once in the new location, place something directly
in front of the entrance to the hive
(MB recommends a branch), so the bees
that venture out on the following day will notice
"something is different" about their surroundings.
This will automatically cause them to re-orientate
themselves to to the new location and be able to
find their way back to the hive.
Know however, that some of your field bees do not
always come home every night. So the ones that
have broken curfew and stayed out all night partyin',
are gonna be tryin' to sneak back in to the old
hive location come sun up. I know, I know, yer sayin'
"not my girls", but believe me it happens in the best of families :lol: