I am too Paul_B in most situations......but for a novice Nylon is definitely easier for dries and a better option.
Fluro can pull your dries under too quickly and if their casting is a bit erratic then it's often best to just " park" the dries out there so the water isn't disturbed and let the fish find it.
Fluro can create a big U underwater as it sinks fast, so when they lift off to fast they get a huge "plooop" and disturbance just like when lifting off a booby..
When someone is experienced, they can try different things , but initially its better to keep it simple in my opinion
The thing is though, that some of us who have been fishing stillwater dries for 30 years or more, still fish our dries on nylon, for the very reasons you point out!
Keep casting to a minimum... avoid thrashing the water to a froth... avoid rocking the boat back and forth... give the fish as much time as it likes to find the fly... avoid big sags developing while you wait... avoid small dries being dragged under...
Softly, softly, catchy monkey...
Added to which - fluoro sticks to the surface film worse than nylon!