This idea is based off of headchange4u's tarp tensioners. For hammocks like the Hennesy the ridge line is hard to get to, so you always have to have the perfect hang for the ridge line to be taught. What you do is take a small piece of rope and make 2 prusict knots. To tighten the ridge line you hold the prusict and pull the ridge line through. The rope takes up the slack of the ridge line.