Crane Tubs

I have a crane 5 'bathtub steel enamel coating. There is a clamp around the bath, but no holes. What would be the best method to secure the tub to the amounts?

I am planning on tile surround with half concrete panels "below. Thanks in advance.

You can drill the flange and carefully placed one inch roofing nail flat head on the nail plate will be flat on the cement wall and not rounded. Where to find it difficult to penetrate the nail just above so that the nail head catches the edging.Better even if your power is to notch an inch 1 / 4 wooden tub out and slide into the slot so that everything flows. This is not always possible because about 5 feet openings are larger. Any questions you can send me an e-mail GL

Set the level of the bath, and drill holes where the amounts are saw this tub to the studs. The concrete panels on the flange extends about one quarter "between it and the tub at the bottom.