if you can see the turkey the turkey WILL see you if you move. period. heck they will see you when you CANT see them. sounds to me like they seen you call and thats all it takes. turkeys eye sight is absolutely amazing. if they had the nose of a deer they would be dang near untouchable. they will catch movement very very easily..camo or not they will bust you..

and if you can see turkeys and dont have decoys you are better off to let them come in looking around..if you call they will pinpoint the calling and if they dont see the hen they are gone. ive had birds walk right to where i was sitting and stare directly in my face...he KNEW thats where the hen sounds came from. they are that good.

when i hunt without decoys i dont hunt fields or open woods. i setup so when i see the turkey i can shoot the turkey. weather its brush 40 or so yards between me and them or a ridge and they are down below or whatever...just so when they come looking for the hen i can send a load downrange...

also when hunting like that i watch my calling. once i got the bird interested and coming the calling is done. if they get hung up ill cluck, purr and scratch some leaves to grab their attention and play "hard to get" with them..

good luck...