WESTERN Bulldogs coach Rodney Eade has "great concerns" over the rushed behinds rule set to be trialled in this year's NAB Cup.

Players will now be awarded a free kick when their opposition rushes through a behind, after the majority of clubs and coaches highlighted the need for change following an increase in the deliberate act last season.

Eade said he is "totally against" the rule, even in trial format, as he believes the penalty to be too harsh.

"I think it's a complete over-reaction,” he said on Thursday.

“It's like stealing a loaf of bread and then being sent off as a convict to the other side of the world. The penalty doesn't fit the crime,"

"For pushing a ball over the line, you can give a goal to the opposition. I don't see how that fits."

Eade expressed his concerns over the trialling of the rule as he believes it will filter into the season proper and influence crucial results.

"There's no doubt in my mind it will be introduced. Experience tells me that it will," he said.

"I don't think noise will be made about it until it costs a team the game, a final, and then there will be a lot of noise.

"It will give the media a lot of options and time to form some critical assessments of it, and there's no doubt it will be talked about on talkback radio – like the interchange system.

"It won't die down. I've got no doubt about. It will be on-going."

The Bulldogs' coach said he is fine with the other new rules set to be trialled, including the awarding of a 50m penalty as well as a free kick for players who retard an opponent after he has disposed of the ball.
 
Eade also praised the other new rule that allows teams to have two ‘substitute’ players at their disposal, especially as his side will play its first game in the heat of Darwin.

"It's the same for every team in the NAB Cup, but in the past in real heat they've given you the extra two to have that flexibility anyway," he said.

"Certainly going into the heat and humidity ... there’s no doubt these players will be used."

Eade said he would be happy to see that rule cross into the home-and-away season, considering how the risk of losing players mid-match has increased in the past few years.

"I think you can cope with losing one, but if you lose two with the amount of rotations and the pace of the game … the game and the fitness levels and the running expectations of the players has gone up," he said.

"I've got no doubt about it going up again this year. The game will go to another level in that aspect.

"It puts a strain on the players and we want to keep our players out there. I think [the substitute rule] is a good idea."