Blending Water with sky - Flamingo

Trying to do some renderings of a watercraft with Flamingo nXt 5.5 in Rhino 7 and wanted to see if there were some tips on how to blend the water with the sky/background? To make it look more natural than an abrupt line for where the water stops and the background image begins. Thanks

Generally that is done with depth of field. In the Flamingo nXt panel > Render Options you’ll find the controls for picking a focal distance and the strength. The result will be a blurring of the horizon line.