Brian your right about powerburst and have posted before that in my experiance it resoils very quickly,
and yes i did use acid rinse and the same can be said for blitz , they do the job but at a cost .
Russ does Shockwave need a acid Rinse because we don't bother( been back to see carpets months later and no issues) and from my memory i can never ever remember anyone coming on here and say i wish id acid rinsed that , is it just habit.