Stick with a truckers hitch just inside the tramp on the side lacing. Loop from the eye strap back to the truckers hitch a couple of times for purchase and then pull really tight and tie it off. You can spray mclube on the line to reduce friction a little - just avoid the end you will be tieing knots with. On the rear bar you can use a harness bar to pull upwards while you push down on the cross bar with your foot. You can get the tramp nice and tight this way if you are using a skinny line. 1/8" spectra would work well. I then use needle nose pliers to dog off the line while I move to the next section. Don't go for 100% tight in one stage - I normally do it in 3 stages to keep the tramp tension even.