I'm working on a collection of AU Cabin-fics starring Laura and Bill. There's smut. :P
The smutty parts are all written for bsg_pornbattle , and two of them can be found there already.
No Going Back, My Heart Is Set
There's more. ;] I feel so frakking scandalous.
Now... Mrs. F got to the part where Bill and Laura kiss for the first time. YAY!