if you know what the spacing of the ties are, you can usually find them by measuring from the corners as well. once you find the first one, the rest are easy to find.
I agree w/ ICF, however, the hooks are a better option. They give you the flexibility of hanging a picture, or whatever, anywhere. After all, on a stick-framed house, do you hang the pictures and mirrors only where the studs are? I think not.
jeff