So I've been thinking about saving weight on colder nights by leaving my bug net at home and just sleeping on a ground sheet under my pyramid. But I know that ticks are active in colder temps than, say, mosquitoes. I always permethrin my sleeping layer, and I know that people sleep on ground sheets all the time, but I still worry that some tick will climb up on my hand or neck. Has that ever happened to any of you? Am I being paranoid? Any thoughts appreciated.