Renting out an RV for profit?

If it were really a good return on investment, the companies that want you to let them rent your trailer to strangers would be buying their own equipment rather than brokering yours. Yes, you can see some money coming in but it might not cover all your costs, let alone compare well to other investments of the same small capital. Renting out through a broker is more in the nature of cutting your losses on a RV that you don't much use, rather than making money.

Many dealers maintain small rental fleets as a way of bringing in sales business, and even so some of them will be brokering customer units rather than investing in their own rental stock.