Go beat the bushes and get your own direct customers. Or lease to a company like Trailer Transit paying a cheap flat rate per mile. It's a niche, meaning it's limited the good stuff anyways - the steady predictable year round busy stuff gets gobbled up by companies like Trailer Transit and cheapened because drivers will work it for nothing. You have to get out here and figure it out. I don't know if it can be taught on an internet forum or learned from a book.