That sounds so simple in theory, but what are you lasering?
Seems like standing on the tee and pressing a button on the GPS (turning it into a "fixed point that it knows about") is as accurate, if not more, than a laser. (Simply because there usually isn't anything on the tee that stands out (and up) enough to be confident you are hitting your spot.
Not sure why this hasn't been a more prominent topic on this thread than it has. IMO, it's absolutely dead-on accurate. Nobody (unless they want to sabotage their career just to be a martyr) is going to wait until the last minute to switch, and most will probably find similar results to Petterson.
I've never used the range to dial in my yardages. One, because a lot of ranges move their range boxes every week, while the yardage markers never move. And two, because a lot of ranges use practice balls that aren't indicative of how far you can hit the ball you play with.
For GPS, that's all I need (a fixed point that it knows about). I click on my starting point and my ending point, and that's that. I have no doubt that if a laser hits the intended target, it will be more accurate, but some are better than others at picking up targets and letting you know which target it has picked up. Also, I imagine it's only better by a handful of yards, which for measuring driving distance, isn't all that important to me. I generally round my driving distances up/down to the nearest multiple of 5.
Oh yeah, ban anchored putters!!!
I think a laser would be plenty accurate to measure a tee shot. Just stand at your ball, wait until the next group is on the tee box waiting patiently for you to hit, and take some time to bounce your laser off of them to measure the distance. They probably won't mind waiting.
As for banning anchored putters, I don't think they'll ever do it. There's no proof that there's any advantage. Oh...and the equipment manufacturers would sue if they did. Oh...and everyone would quit golf and all the golf courses would go broke.
That's all the idiotic comments I can think of off the top of my head.
Glad that last sentence was in there.