The Oceano Dunes off-road park isn’t exactly a poor man’s paradise, judging by the high-ticket RVs and trucks lined up at the entrances on busy weekends. Still, on a weekday you can rent an ATV there for as little as $16 an hour. Prices go up on the weekends. At least, you used to be able to do that in pre-COVID days. After a lengthy shutdown, the park reopened recently to off-roaders, but with a big difference: Only visitors who own their off-road vehicles are allowed in. That doesn’t sit well with businesses that rent ATVs. “Rental companies have been locked out (excluded) from participating,” BJ’s ATV Rentals, one of a handful of rental shops catering to off-roaders in South County, posted on its website.