I just did a trial run of setting up my hammock/tarp, and it went pretty well except I've been using 2mm paracord to hang my tarp on, and 5mm cord to do the prussik hitch/figure 9 setup(courtesy of sugemery's vids) to stretch it out but its been slipping. what thickness of cord/line would you recommend for the tarp ridgeline and is paracord a good type? it does stretch some, and I set up in the wind and needed several tarp clips to keep it attached also. any tips would be greatly appreciated. thanks!