A turkey can literally see 360 degrees so if you can see him he's gonna see you move, unless his back is to you in full strut.

Your steelforce will do fine but put something behind it so it won't pass through the bird. I know a few bowhunters that use the game trackers and they work great in aiding to find the bird if he flies. Blinds work good from everything I've read. I don't know if they need to be in place or not so the birds can get used to them. Around here, the flocks roam so placing a blind in one area that promised to be loaded with turkeys, won't produce a shot later because they've moved elsewhere. I've ambushed two birds using a recurve and waited for the bird to go behind a tree to draw and then released as soon as his body offered the shot.