Flying gelding Boom Chicka Boom again proved good barriers are the key to his chances with his impressive win at Eagle Farm.

Boom Chicka Boom ($5) made it five wins when starting from from barrier one when he led all of the way to win the Mullins Lawyers Open (1000m).

Stable foreman Les Kelly junior said Boom Chicka Boom was always hard to beat when he drew an inside barrier.

"It means he can lead without too much effort and then he is hard to run down," Kelly said.

"There is a 900m race at the Gold Coast in three weeks and he will have a mortgage in that.

"But of course he will need to draw a good barrier in that."

Boom Chicka Boom is bred and raced by former top equestrian Peter McMahon and his wife Michelle.

The gelding is a half-brother to Real Surreal who won the 2013 Magic Millons 2YO Classic for the McMahons.

Kelly said while Boom Chicka Boom wasn't up to that standard he might win a short-course feature race in the winter.

Tycoon Ace ($6) did a good job to run second beaten a short neck.

"He tried hard but the winner just had too big a break on us," apprentice Aiden Thompson said.

Classy three-year-old The Sinner ($6.50) has some big assignments ahead after his comeback win in the Trump Flooring Handicap (1000m).

The Sinner wasn't far off some top horses in his previous campaign and he lived up to that form with a strong win.

Trainer Natalie McCall said The Sinner would now tackle the $300,000 Three-Year-Old The Jewel at the Gold Coast on March 14.

"We'll keep him on the fresh side because the Coast race is 1200m and his best is probably at 1400m," McCall said.

"Then he can head to Rockhampton for a big prize money three-year-old the Capricornia Championship in early April."

McCall won the race with River Lad in 2010 and he went on to win the 2014 Stradbroke Handicap.