Interesting to read all the replies. I manage very happily with just tying knots for the tarp, quick and easy, although I sometimes use a linelok at one end.
Whoopie slings are definitely a must, I have mine larks footed to the hammock, loop ended tree straps and a marlin spike hitch, nice and quick and easy.
More than one way to skin the proverbial though and respect that others have their own preferences, might try some of the dutch gear just for fun, but can't really see it being significantly quicker or better, can it ?
Cheers, Paul