Sugarska Duliba is not there anymore. Good camping area near the well (not allowed though).
Zdrilo is the best Skloniste ever, it has electricity, water (use the metal coin to make contact with the electricity thingies down the sink) and it is clean. I really enjoyed staying there.
The trail between Sugarska Duliba and Zdrilo was overgrown at one part, where the GPS track goes of the Velebitski planinarski put. I went back to vpp.