I think Sanford hit the nail on the head. Stringing a kart first to make sure everything is square, then using lasers to set the frontend is the way to go.
Typically, I try to string a kart early in the season then use the lasers to keep the frontend in place. If we have a major crash, do what you gotta do at the track to race/finish. Then, re-string it before the next race.
I’ve talked to others about stringing a kart and they just look at me. Especially the younger ones!