Magpie Bob jumped straight to the front in his heat and led all the way to score in 36.56, less than three lengths outside of Miata track record of 36.40.
Although it was Magpie Bob’s first run over the 647m journey, the white and black stayer has forged a good record racing in 642m and 715m events at Cannington in recent months.
Hobby also prepared the winner of the other heat, Montana Express.
Montana Express proved to be too strong for the leading Din’s Chappi as he overpowered that greyhound before going on the win comfortably by more than six lengths in a time of 36.98.
In other racing, Jungle Hero continued his revival of fortunes when the veteran chaser claimed the Free To All run over 490m.
The Linda Britton-trained red brindle broke a 25-race losing streak when he saluted at Cannington a fortnight ago and he made it two from two when he came from mid-field to surge to victory in a time of 27.72.