"Last year we didn't really have another choice at halfback, someone had to put their hand up and that was me.
"I was still getting the boys over the line, I just couldn't get over the line myself as much.
"I want to run the ball a bit more - last year my running game was down a bit, I was probably trying to ball play a bit too much.
"I set up a few tries but I want to score a few this year.''
That's an ominous warning to the Tigers' NRL rivals, with Marshall revealing he had added some muscle following a torturous pre-season campaign under Potter.
"Mick Potter's brought back that old school mentality of run until you collapse or run until you vomit - that's been the case for us,'' Marshall said.
"I'd almost forgotten what it was like to have a tough pre-season - usually I don't have to be back until January so to be back in November was a bit of a shock.
"I really enjoyed it, got the chance to put on a bit of size and get a bit stronger for the season.''
Marshall and Miller will get their first chance to impress in Saturday night's trial match against Parramatta at Campbelltown Stadium.
The Kiwi Test skipper said he was also looking forward to going into the season minus the expectation of premiership favouritism after the Tigers faltered badly when carrying the tag last year to miss the finals altogether.
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- AAP