What should I practice to improve on 70s soft rock/yacht rock?

Basically title, looking for a roadmap of easy songs of those genres or that would help develop similar skills. I've already done those "basic fundamentals" (money, hysteria, billie jean, the trooper, etc) as well as other songs of other genres I enjoy, but am looking to "specialize" in that direction. Problem is, most of the yacht/soft 70s I like are way too hard, so I can hardly keep up with the tabs even after slowing it down to a ridiculous level.