"I thought he ran really well the other day. He was jammed up behind other horses for quite a while and when he got some clean air, his last 100 (metres) was really good.
"But the draw (barrier 16) makes it tricky."
Nihancan started his career over 1600m, finishing last at Ballarat in March before rising to 2000m when finishing seventh at Kilmore in April.
After that, Symons said it was decided to ride him more positively.
"Early on he wasn't switched on and then we rode him forward at Pakenham," he said.
"Before that we had been teaching him to settle, and we saw improvement and then he really improved at Seymour.
"The horse that he beat ran third in the (Victoria) Derby and I thought he took another huge step forward at Flemington the other day.
"I know he only ran sixth, but I like the way he hit the line and he's screaming out for the 2500 metres.