Small stumps/inaccessible stumps/wet conditions: we still wheelbarrow chips up a 12 foot ramp into the truck. Benefit is chips are dumped at front of box, which is great because we always have topsoil at the rear for backfill.
Big/most stumps: mulch bucket goes on Ditch Witch. Holds about 3 wheelbarrows of chips. Obviously
much faster and easier than manual. Only downside I can think of is that we sometimes have to offload our backfill dirt because we can only approach the truck from the rear and don't want to cover topsoil in chips. If you can side load your truck or trailer this problem goes away.
Highly recommend one of these for cleanup:
View attachment 50187
Really digs in and moves chips. Helps get compacted or muddy stuff out of grass. Rakes are useless for this. Or consider a Stihl Powerbroom. I think Daniel has a YouTube video showing how he uses it.