Rulesman

A few years ago we had a similar problem with one green which had a couple of overhanging pine trees. As it happens it was adjacent to the greenkeepers sheds. So they would leave a leaf blower nearby that members could use when necessary. The trees were taken down recently as the shadow from the trees was affecting the green surface.

Papa Steve, you were playing 'Fourball matchplay'

Different slants. 1) Could it be that as matchplay was the standard form before strokeplay, the penalty of DQ for the hole was already established. That wouldn't translate for strokeplay as it wouldn't make sense. 2) A 2 stoke penalty in a match would in all probability result in loss of the hole anyway. So the penalty is a handy way of saving the time taken to play the hole out..

I have never believed a line on the ball made any difference. It's the line your clubhead takes that matters. I voted no but like Erik, I'm not really fussed.

As I have said, I have not seen a video of Casper's action, so cannot judge whether (2) is breached or not. You may be right about (2) but I can only see where he locates his forearm in the two still pictures earlier in the thread..

The club does not need to be in direct contact with the body. 10.1b bullet 2 Indirectly, through use of an “anchor point,” by holding a forearm against any part of the body to use a gripping hand as a stable point around which the other hand may swing the club. I don't know what Casper did as I haven't seen any video of a full putting stroke

It is according to the USGA's note 2 on the fuller version of the pictorial featured above. https://www.usga.org/content/dam/usga/images/rules/anchoring/understanding-anchored-strokes.pdf

I was not saying his grip would be illegal. But the two pictures don't show whether or not his forearm is fixed.

An “anchor point” exists when the player intentionally holds a forearm in contact with any part of his body to establish a gripping hand as a stable point around which the other hand may swing the club

Those two pics don't tell us anything. Which was first? The one on the left or on the right. We also need to know where is hands, wrists and forearms are after he has struck the ball. But the image at the end of the arrow (which is permitted) is not the same. In that image the player's hands are not touching his thigh. Do Casper's hands move towards his left when he strike the ball? Or is his forearm creating a pivot point.

The various authorities have recommended 95% for a reason.

See his right elbow at about 10.44 in the last video

His forearms don't seem to move but I am certainly not convinced that they were anchored to his thighs. His forearms do not appear to be fixed to his thighs or body. In fact I'm pretty sure his left elbow moves. Edit: In the last video it seemed that Caper's right elbow was always clear of his body

Has anyone got any photos or videos of them putting?

My course has one internal OB to protect players on the next fairway (dogleg). Royal Liverpool (Hoylake) has one. But although not uncommon they certainly don't appear on most courses.