I've practicing setting up my BMJB tarp, with doors, for my upcoming snowtrip. I've been using the guylines that came with a gifted OES Standard, and they are 6 foot, JRB's Self Tensioning Lines. Since it's a big tarp, there is so much leftover. Would it make any sense to bring shorter lines, and if so, what lenghth? Yes, I am asking because I am a bit of a gram wheenie and the weight of my set up is, well..."difficult". What length are your winter tarp guylines? Also, I don't think it will be cold enough to make the rubber brittle, upper 20's, what do you think?