It sounds like Rocky is financially secure and not in a rush to be forced into a move that he doesn't want to make, ie out of the top flight.
We have seen players in the past make the drop down and come back to have good SL careers but it doesn't seem he wants to, or needs to follow that path just yet.
If he is out of the game for a full season I would think his main route back in would be to drop down, however I think at the moment he is probably comfortable by the sounds of it sitting back working hard and waiting for the injuries to start rolling in and pick up a gig that way. It's a risk but it may pay off.
If Union hasn't made an approach I would be surprised. I think his game would transfer across quite comfortably to the 15 man code.
I am sure he will have opportunities in the near future which are attractive to him. He may not be a fit for the current set up at Wakefield but he is without doubt a SL standard player.
I just hope wherever he gets a deal he is given time consistently at fullback and not shunted about so he can have a go at making the position his own.