Hennessy and seperate tarp user here (either JRB 8x8 or HG Winter Palace), but a friend of mine uses his WBBB dbl 1.7 with the tarp in snakeskins, prussiked to his treestraps...
Just to let you know, yes that works. He uses a biner on each end of his webbing to go around the tree and clip onto the webbing again. Then the cinch thingy near the hammock ends.
Afaik, the tarp (10x10, used diagonally) is in snakeskins, his hammock with quilts are in a drybag. Just the two suspension parts are loose.