We're building a slant roof design with SunTuf roof panels, and it will slant down toward the front of the coop. I get why people don't usually do that, but the back of our coop is close to our house, and we can't slant it so rain runs off right against our foundation. So, what is the gutter solution to the runoff across the downhill end of your roof? I'd love to find a way to connect guttering or some sort of line to drain into a rainbarrel for watering the birds...or at least to avoid the mud that will likely form right in front of the coop (luckily, the doors are on the ends)...thanks for any suggestions!!