Hey Coodgee, I haven't used PVPP for a while but when I did I never had an issue with floaties. I filtered a dry hopped beer on Sunday and didn't get any clogging issues at all and the filter when back flushed gave me a creamy green looking water with tiny particles. PVPP coats everything and drags it to the bottom of the fermenter.
For dry hopping, without filtering, I chuck them in loose for about 3-4 days at ferment temp and then crash chill to 3-4 degrees and then keg. I do get some sediment in the bottom of the keg but mostly clear beer and definitely no floaties.
If I used a hop bag I would tie it off so it can get lifted out before kegging. I haven't been all that impressed with my dry hopping of late so I'm going to spend the hops in whirlpooling and do a few trials.