Yeah I use tweezers for topping... I have big dumb fingers, so they miss often.
As far as hanging material I use a staple gun.. As you should. For added insurance get white duct tape, rip a small piece off, put it where you are going to staple, then staple over this, it helps with the staple pulling through the material.
If your worried about taking the stuff down and moving it around... Don't. Concentrate on the grow, pinch your pennies elsewhere ie overpriced nutrients