RE: Paper tune picture
Lasers work only if the centershot of the bow is square with the riser that the lazer is set off of.The eze eye is setup with the riser and the riser is irrelevant to the path of the string and cams.
Lazers are usefull tools but only if the person using it is aware of how to properly use them and know the do's and don'ts.Different lazers are better than others at different jobs as well.
Maybe Hoyt has addressed the issue of the risers not being square/parralel with centershot because they used to be way out.
I agree with walk back and group tuning but a perfect bullet hole can be achieved after tuning the bow with those methods if the spine is dead on and the person shooting the bow has great form and doesn't torque the bow.
Check out the link I posted,I have done it,many times over.