Yes John, I have applied Awlcraft clear over Awlgrip, Awlcraft, and a few other polyester-urethanes and acrylic-urethanes.
Awlcraft clear is gin-clear- some other clears may slightly discolor the underlying paint.
As long as the prep is sufficient, and the application goes well it can add a good deal of "depth" to the paint. Also ads additional protection from abrasion, impact, etc.
That said, it can be a major PITA as well. Long term, down the road problems. Chipping, loosing transparency/discoloration from UV, etc.
I wouldn't do it unless the boat is going to be a dock queen.
If I remember correctly you've got a beautifully redone fighting lady yellow Bahia Mar... I'd leave the fork stuck in her.
Unless there is a specific reason you're considering it?
I don't know what the world may want,
But a good stiff drink it surely dont,
Think I'll go and fix myself...a tall one.