I recommend trying the Carentify platform https://carentify.com . It’s a convenient service for renting any type of transport, including caravans. They have over 60 types of vehicles, from cars to specialized equipment. All you need to do is add your trailer, set the price, and start accepting online payments. By the way, it’s convenient that Carentify doesn’t charge a transaction fee. Payments go directly through Stripe, which guarantees 100% security of all transactions. The platform allows you to control the entire rental process, from the first application to receiving payment.