The most recent game-changer is, of course, linking with former NZ Derby runner Borrack, who has come out of nowhere to emerge as favourite for the $57,500 Grand National Hurdles at Riccarton today.
Singer said Borrack hadn't seen a fence before the tail-end of last summer, but the giant chestnut was a natural from day one.
The pair won stylishly at their first raceday attempt, at Wingatui on June 12, and three outings later Saturday's all-the-way Sydenham winner is still unbeaten in his new role.
The only glitch for Singer en-route was a fall aboard heavily-backed stablemate Butch James at Oamaru on June 30, paving the way for Mathew Gillies to warm the seat in the 7-year-old's next two victories.
Singer reunited on Saturday and was impressed with Borrack's tenacity in his toughest test so far. He said yesterday that Borrack had shaken off the 3200m tune-up in which he effortlessly accounted for most of his National rivals.
Singer says the drying track conditions - Riccarton was a dead (6) by Tuesday afternoon and getting firmer all the time - is also a big assist.
His only query is whether the Black Minnaloushe gelding, who ran 1:10 and change in winning his second race over 1200m, will see out the 4200m.
"I am a bit nervous about the trip - he can truck a bit," said Singer.
"He likes to freewheel out front and have it all his own way and if he does pull he definitely won't get the trip.
"He would want to settle a lot more than he did in the Sydenham, but it was three weeks between runs and I'm just hoping he has chilled out a bit after that."
Singer said it all depended a lot on Borrack's mood on the day as to whether the distance will be a factor, something he won't know for sure until they head down in their preliminary.
"If he drops the bit completely, I know he's got his mind right on the job."
Punters can, however, be assured that they are at least backing a rider at the top of his game.
Singer credits Bull and rival Grand National trainer Kevin Myers, who has Honey engaged, for the form turnaround.
Bull has helped him get his weight back down to the point where he will be much busier on the flat this season, while Myers' riding tips - such as using his ankles more for balance than his upper leg - have been priceless.
"He [Myers] quietly gives you confidence without you knowing it - he's really clever like that."
Singer is hoping he can repay Myers' support with a win aboard stable runner Lizac in the Grand National Steeplechase on Saturday.
Meanwhile, he labels hurdles' rival Bally Heights as the major stumbling block in the first leg today, which is also leg four of the $40,000 Pick6.
Singer believes the Paul Nelson-trained last-start winner, a $10 fancy yesterday in the TAB's fixed odds market yesterday, is the forgotten runner.
"Horses like Vamoose and Foremost have all their form on very heavy tracks; they're out-and-out mudders.
"But Bally Heights is a bit better on good tracks, and he has Jonathan Riddell aboard, who is an absolute master."
