After looking at shed area last night, then thinking about things later, I have decided on a slight change of locations for hoist.
I have decided hoist will not be in shed now, it will be in an area I had set aside as a "cleaning bay", it is still under cover, but has an open front and I can close in a high end (southern end) with semi clear polcarb sheeting to let light through.
In following pic it is in the red area.
I have also scaled the shed closer to actual size, and extended fence for donors.
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Cruising in 5th
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Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.