Thanks guys!
@DocCharly65, I separated the propellers from the boat, then centered and rotated in TG. Couple of times I didn't set up the coordinates correctly and then realized one or both of the propellers were flying off in a totally different direction than the boat.
The music is by "The Intangible" - I'm a fan of his works and I though this passage was well suited for the video.
@ Dune - yep, it's a boys dream. An old man's dream too!