I'm in the planning stages of making a 4-season tarp. There seem to be 3 basic styles of doors. Ones that just close the space between the tie outs, ones that come out to the end of the ridge, and those that go past it. With each step out you get more dry/protected area but you also have more weight. So, my question is, which style do you use? Why? And do you wish you had gone with something larger or smaller?