Different clears sand differently too...
I find that the harder the clear, the easier it is to use finishing film on it. The more flexible clears or clears with flexible additives in them are awfull in the finishing film pigtail department...
I have abandonned the finishing film on House of Kolor UC35....period...
Other refinish clears I use are ok with the finishing film unless they are flexiblized then I wet sand by hand...
I use the old sheet's back to wipe the dust on the new sheet. That is I will use the first sheet...then take it off, put a new sheet...then use the old sheet's back to occasionally wipe off the finishing film and surface to remove the dust. The back of the finish film is hairry and traps the dust very well...
I don't get much better mileage than 88 and len either...but it saves enough time to be worth its cost...
My 2 cents worth...
Serge