Variety is the spice of life. However, I tend to keep shotting patterns fairly simple. There are really only three variations I use, bulk, single droppers and evenly strung out. The three will cover all aspects whether on still or flowing water. The choice of float will vary depending on the conditions, venue, depth and target species.
However, the majority of my float fishing will be on flowing water with a long rod, centrepin reel, Avon type float and bulk shotted to get it down quickly. The flowing water I tend to fish is too swift and broken to be messing about with tiny stick floats and strung out no 6 shot. Agricultural would be a reasonable description of most of my float fishing. Absolute finesse is largely pointless.