I'd be in favour of giving Hoy a game in the halves as we need a bit of a spark of creativity to beat Saints and in all honesty, McNamara doesn't have that. Trueman and Hoy in the halves would be unpredictable and adding Litten in at 1 would at least give us an exciting 1/6/7 combo.
Hoy at halfback could also open his game up and boost his attacking confidence (which we saw at Magic) - if he could chime in a la Jai Field at 1 with Trueman and Clifford then we'd have the nucleus of a very good team - just needs the rest of the side to be built around those three and a new hooker.
Hoy looks like a real confidence player and if he picks up an assist in a game you'd back him to do the same again not soon after.