RE: How predicatable are turkeys?
they might. exspecially since it sounds like they are heading to roost?
some birds are extremely patternable. others dont seem to have a pattern at all.
dad and i patterned a boss down to a couple minutes to come through an area. never the same path..but always within 50yds and within a couple minutes...and always with 8-10 hens. never did kill him. had him so close behind me(talking FEET) i could hear his fan click as he strutted...just never got a shot.
good luck...you might have them figured out.