Some of the full timers I know use the internet for work and some don't. Anyone wanting to make sone money while living in their RV, need to take a hard look at what job skills they have to sell. I have friends that are RNs, live in a 40 ft class A and work the west coast as travelers, doing 3 month contracts with various hospitals. An Okie friend works as a traveling radiologist doing fill in work in OK, TX, MO and AR. Lives in his motorhome and works contract in those 4 states wher he keeps his medical licenses current. Works about 6 months out of the year. Some Colorado friends work out of their motorhome, she does medical billings for several medical clinics in Colorado. They don't know if she is at her home office or her RV office as everything is done over the Internet or by cell phone. Her husband makes music CDs for radio stations, Oldies but Goodies type. He has contracts to make X amount of hours per week for them to plug in and broadcast. He has duplicate equipment set up in the RV, the same as in his home office in Colorado. He is a retired radio DJ and former station manager.
Others work oil refinery turn arounds , so he and his family move 2 to 4 times a year to the next job. Met an employee at one of the Camping World stores here in Florida that works seasonal for them at different stores around the country. Michigan in the summer, Florida in the winter, etc.
A few years back in Jackson MS, I stopped for fuel at the Flying J and decided to spend the night in their parking lot. Noticed, not too far away from me, a large Class A parked. There were three young women with it, dressed like they were going clubbing There were 8 or 10 truck drivers gathered around talking to the women. Every once in a while one of the drivers and one of the women wound go inside. Suspected the women were financial advisors or psychic readers, as I know many truckers are interested in such.
Recently saw a Class A with a painted sign on the side, DOT Physicals to Go. Curiousness got the best of me so I went over to ask. Husband and wife team, doctor and nurse did on site DOT physicals for company drivers. Said they could do 20 or 25 a day. I doubt they worked over a week a month and just enjoyed life the rest of the time.
Bottom line is a person has to have something to sell. After retiring from my office job, I did some internet consulting with former clients in the fields of finance and also in security matters of interest to them. I had fiber optic cable at home and had AT&T and Verison hot spots for when we were on the road.
Down side was keeping clients in different time zones happy and having some time for myself, to do things like sleep, eat, shower, etc. LOL