I have about 6.4 acres that slope downward from the southwest corner to the northeast corner. My 2 soil types are both sandy in composition and very well drained. I am clearing out a lot of eastern red cedar trees as I open up a predominantly pine forest with the intention of creating some pine/blueberry/strawberry guilds; and knowing in advance that decay will be slow, I still am going to incorporate them into hugelkultur beds in an effort to retain organic matter and increase water retention. My delimma is how to maximize water runoff retention without impeding air flow which would increase the chance for frost pockets. I am thinking in terms of beds running at an angle less than perpendicular to the terrain slope, but how much of an angle is the question. Does anyone have any experience with this or can anyone present me with any explainable advice?