1) Who is going to drive the rental truck? What kind of vehicle do they normally drive? Do they have experience driving a big moving truck? If they crash it, who is going to be responsible?
2) Who is going to carry the furniture to the truck? Do they carry a lot of heavy furniture in their spare time? What if they get hurt? Is your client going to pay their medical bills?
3) What if your client’s friends don’t even show up to help him? Which do you think they would rather do—enjoy their Saturday morning off, or help your client move heavy furniture for free? And as for him getting his friends to do this – does he also ask his friends to come over on Saturday morning and change his car’s transmission?
Your clients will be better off with a quality professional mover.