I usually tie a truckers hitch in my tie down lines for my kayak and they hold great. I'm new to hammocks but couldn't you do the same on the tie outs on the tarp? Its fully adjustable, you can get a nice tight pull, no additional hardware needed, when your done just yank them outta the line.
Still waiting on my Superfly & Blackbird also. It's kinda like being a kid again waiting for Christmas morning.