A NARROW majority of footy fans say the countdown shot clock should be displayed on the scoreboard despite controversy in the final minute of North Melbourne's win against St Kilda.

On Monday morning, almost 28,000 votes had been lodged in a poll on AFL.com.au, with 52 per cent saying the shot clock has a place in the game.

The Kangaroos led by one point when forward Mason Wood won a free kick for incorrect disposal against Jack Newnes.

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Just 19 seconds remained in the match, and with the shot clock ticking down from 30 seconds, Wood chose not to kick for goal until the siren went to put the result beyond doubt.

He went on to kick the goal to give the Roos a seven-point win and leave them undefeated on top of the ladder at 7-0.

Wood's actions were well within the rules, and Saints coach Alan Richardson said he would have been impressed if one of his players had done the same, but questioned whether it should be allowed.

"Is it a good look? I'm not sure," Richardson said after the game.

"But given the rules and the circumstances, I thought he did a really good job."

Wood told AFL.com.au after North's thrilling win, "I'm just playing within the rules and until they (the AFL) change the rules, players will keep doing it."

The AFL introduced the countdown clock at the start of the season after a positive trial in the NAB Challenge.

A match official activates the 30-second countdown clock when players have a set shot from inside 50. 

Former Western Bulldogs star Brad Johnson said the shot clock has not worked out.

"I haven't liked it. When it came up, I thought let's just wait and see, this might not be too bad," Johnson told RSN on Monday morning.

"(But) from game one, when I saw the first player look at the scoreboard and keep looking at the scoreboard … I thought, 'Nah, I don't like this'.

"I think 25 (seconds) is well and truly long enough for a player to have a shot."