You're not allowed to 'create space' for yourself.

I was watching a Nationwide Tour event, and a guy hit the ball into some tall fescue. The cameras stayed on him for 5 full minutes as he discussed with a rules official how to step up and setup to his ball so that he didn't violate rule 13.

The fescue was hip high - so the ruling was that he had to take these giant steps as to try and step as vertically as possible into the fescue (as not to flatten the grass).

It was neat to watch. Another instance is that you're not allowed to bend branches on a low tree to setup. Hit the branch on your swing, sure. Break the branch on your swing, OK. But you can't bend it to get 'in there', and you can't break it on your practice swing.

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True Length Technology Fitter - www.truelengthtechnology.com
It's live! - www.ShipShapeClubs.com
PCS Class 'A' Clubfitter

A new highlight: Golfing the home course on Christmas Day.

I say it too often: If it's golf club shaped, you can play with it.

For the record, I'm a club doctor, not a swing doctor.