The lack of clouds in this shot is certainly no detriment. The deep red glow on the horizon is very striking, especially set between that gorgeous blue sky and water. A very calm and peaceful evening, well captured, Paul. No clouds required for sunsets like this.
I love to know where you get these colours from. I'll trade you some clouds for a bit of the yellow. A beautiful looking sunset scene and lovely colours. A wonderful watery reflection. great job.