My chicken coop is a converted play structure so the height was predetermined. The ramp hits the structure at 60". From the base it is 72", so the angle is just barely less then 45 degrees. The length of the boards to make this happens was 92". I have used two 1x6 boards tied together with some cleats. The board has a bit of a bouncy feel to it. Any suggestions on how to stop that? Any general suggestions about the design? I don't have chickens yet, but I am looking for them in the 10wk+ age range so I hope they can climb it.