I went with just the black background you buy in rolls at the LFS.I had to go 2 high to cover the whole thing but you don't really notice the crease at all,esp because I used a little vegetable oil and soapy water to apply and smooth it out.(and the width of the tank help with that too.)
I put the background over one of my MFK decals.
I had forgot about hooks and dollars I will probably get some of those....but some people say they can be pretty mean/nippy?
here are some pics of my tank awhile back for those who mentioned it: