We've had some prior discussion on another thread about axle position when you stop. If you've just gone around a corner, or backed into a storage space, the EZ-Flex suspension allows wheels to move somewhat independently, dragging the axles with them. So to get a more accurate reading, you probably need to pull straight ahead and back straight up a couple of times. When I had my Landmark in at Magnum Trailer to check alignment, they insisted the only way to get a true reading is to suspend the trailer from the frame - wheels off the ground. They didn't use a laser - just measured distance from the kingpin mark on the ground.
I'd also note that when I had the Laser Alignment done at Camping World, I was very unimpressed with the accuracy. The mounting of the laser tool allowed for quite a bit of movement when the tech pressed the buttons. He also was not using the reflective plates at the tires - he bounced the laser beam off the inside of the tire treads. He tested repeatedly and got wildly different results. After many samples, he concluded that the alignment was within 1/8", which is far less than the minimum change that can be achieved with Correct Track.
This might have been a deficiency at this particular Camping World, so I don't want to say that the laser alignment is not worthwhile. Just that it would have better results if used the way the inventor intended. And it might be more accurate to have the wheels off the ground, suspended by the frame.