I'm a bit surprised about the reservation over using a waffle weave towel when doing an ONR wash. I've used inexpensive wally world mainstay MF waffle weaves for ONR washes for years with no issues/problems. Having 'said' that, I'll point out that I'd never do an ONR wash if the ride had caked on mud and often I've done an ONR wash after a pressure 'wash' rinse at the coin op (more like $3 these days) car wash. Like always, you wanna start at the top and work down, saving the area around the wheels and the wheels for last. But the waffle weave towel works just fine!
The mo jo is in the ONR bottle with it's slickery magic (and I use double the amount of ONR about two capfulls per gallon of water)...it really doesn't matter if it's a towel, MF mop or a grout sponge as long as you keep turning and rinsing as you go, the crud goes in the bucket and the finish isn't marred. At least that's been my experience.