One note with bungees or tarp tensioners on the ridgeline - when the wind blows, it'll blow your tarp off center. When I used a tarp tensioner on each end with the MacCat Standard, that was enough to let some water blow into the hammock.
Last trip I used a single strong tensioner on one of the tarps so I could hook one end to the hammock line. It worked find but we had a pretty sheltered site and there wasn't much wind.
I wouldn't use it in windy conditions, but it did make setup a little quicker to do it that way.