we did them constantly at this caterer i worked with
they are all done day of unfortunately
but i'd toss 'em in a strainer, rinse abundantly well
have two large flat bottom plastic containers ready and cover the bottom with two-three layers of paper towels
layer in a bunch of berries but don't crowd
get them to roll them around on the paper towels by just rotating the whole container
as if the container was running bases like in baseball
they start drying themselves
gentle them from that into the other paper towel lined container--roll
in the meantime reline the first container with dry towels
repeat a few times till paper towels stay dry
then we either had to hand roll each one a bit more in another paper towel as we dunked in choco
or if we could then lay them out on a sheet tray they would be perfect in an hour or so
tons of ways to do this--that's what we did to process big batches