Location: All locations have differing climatic conditions eg. Hail, sun, wind etc. These generally dictate what size net should be used, which in turn dictates structure size.
Crop: Choosing the right net type and colour for your crop is essential. Colour is the biggest decision to make when deciding on a protective canopy.
Variety: With apples in particular different varieties require different shade levels. For example, we would generally advise not to place white net over Granny smith apples as they can still receive sunburn in some areas and red apples can have trouble colouring under some black nets.