I have a new Mushroom Finger Leather Coral without a piece of live rock.
How can i attach the coral to a rock?

dude why 2 topics, but each with a different name? wtf?
http://www.nano-reef.com/forums/index.php?showtopic=214748

Rubber band or glue.

I prefer sewing them on with a needle and thread.

IMO this works the best.

You can skewer the base with a toothpick and place that in a hole in your LR

Place it in a glass in the tank with a piece of LR and the mushroom so it won't be affected by the flow. Eventually it will attach to the rock, then you can remove it and place it where you want.

Or, try what Frankenreef said.

There was a problem with NR and it said that i had to make a new topic??????
So there are 2 posts.

I superglue it to a rock and made a piece of net over it and hold it togetter with a rubber band.
It works!

That works too.

Well it worked for a few weeks.
The coral floats around the tank again.

So superglue and rubber band doesn't help.

What can i do next?

Skewer + pics

Mushroom Finger Leather Coral

Do what Scott said. Superglue eats away the tissue of leathers in most cases.

well i try and see whats happening......how long do you think it will take for the coral to attach?

Around 4 days.