Unless you are doing alot of local or courier type deliveries, I personally think they are a waste of money for someone new. If you are doing FedEx white glove they can help you get some of those types of loads. We had 5 units with these and they were more hassle and expense then they were worth. You will gain some loads with them, but you lose just as many because many plants will not accept a truck that can't lock unto their dock. They are prohibited from being loaded by many unions. Safety and maintenance is another issue with these.
Of course these are my experiences with having them. And you are right, you are hauling extra weight around for a large percentage of time that you aren't getting paid for.
Davekc
owner
20 years