Parents pool got a new Pebbletec resurfacing last year, but have taken over the care/maintenance just this summer.
Does algae have a harder time adhering to a rough uneven gravel surface? Therefore making the pool easier to clean and maintain? Common sense would think so.
I was told that algae growth is easier on traditional flat plaster surfaces since it grows more uniformly with a better grip... making it stronger by forming layers/sheets if left unattended to.