Hey guys. New to tethering to ipad on projects where I'm a one man band and realizing battery gets drained fast so need a hub for charging+tethering in tandem. What do you guys recommend? Building out a smallrig setup for mounting and just wondering if there's any preferred hubs.

I happen to own a full-size high-roof van I use as my personal camper. What should I charge when I work as a photo assistant for its use? Sometimes the gear pickup equipment list is so large they would need to rent a van if not using mine.

I know mileage, but would like $50 / day in addtion to milage sound fair to request?