[Perfectlap]

get a sea sponge $20. it sucks in the grit

I'm very leary of using microfiber repeatedly to wash with.
Those hooked fibers are good at lifting sediments and dirt but they also are stubborn at letting them go. I've washed them several times and could still
see debris in between the fibers.
MF is fine when its clean a nightmare on paint surfaces when its not 100% clean.

I only use MF with looped ends like the SOnus Der Wunder towels (very short nap).

Lately I've been spraying FK 425 on my drying towel and the car itself to increase the lubrication and reduce swirling while drying (sometimes the car isn't totally clean and you can't see it). But any quick detailer will work just as well.

grit guards for the buckets are also key and an ounce of Optimum No-Rinse in both the wash and rinse bucket. It encapsulates dirt and the dirt then sinks to the bottom past the grit guard so you are only working with clean water.