Walters can do a job there and whilst he struggled late in the season, early on he looked quite good.
I think both him and paix find the length of season taxing playing in the dummy half role as they do. Neither have the wisdom to pace themselves to last and they tend to go at the role like a bull at a gate, then either dissappear (paix) or quickly fail at basic skills (walters).
That said, i think sailor is too good a player to pass up and i would have had him, not cobbo at fullback this weekend. To me he looks far more the finished product there whilst cobbo looked a little lost when he last went there.
I suppose training there in the off season would have helped but i've got the feeling cobbo will need another year to settle within the squad.
A bit like niu last year, he will probably look spectacular in attack but the defence will look a lot more vulnerable and he might get caught out on some kicks behind the line.