From the report: "...The committee noted in its report, although student-athletes may choose to train during times when countable athletically related activity is prohibited, there can be no suggestion by the coaching staff that they are expected to do so. The former coach’s monitoring meant that the training activities during those times were not truly voluntary and were impermissible..."
This is how it was explained to me almost 20 years ago when I got my first college coaching job. It doesn't seem like that's too difficult to follow. I've always told my student-athletes that I'm willing to help them in any way they want, but that they need to approach me during the parts of the year the NCAA allows direct day to day coaching. I provide a general year-round template, a "training philosophy and development plan", that they can either follow or not follow. But I'm not reviewing what they're actually doing over the summer unless they're initiating the conversation. In my experience, about 90% of team members who are proactive with their communications to me see real improvement, whereas with those who never/rarely check in it's maybe 50/50.
In the past when I've asked our compliance director about runners logging their runs year round I've been told that's fine, no violation, as long as it's not communicated to the team members that they have to do it. I've also been told it's fine to review their logs and provide feedback if they send them to me. I can't require that they send them to me. I can't set up some kind of punishment system if somebody on the team doesn't want to send me a training log. If they're doing an online log or something like Strava I can't require them to give me access to their account. But if they want to provide access I can check it out.
The NCAA's challenge in setting rules to address this kind of thing is they're dealing with 1000+ schools in 3 divisions with widely varying goals and resources. They're trying to make rules that make sense for team sports and individual sports, and that are somewhat similar. They're dealing with student-athletes who range from Olympic hopefuls and future professionals to 35:00 5k XC runners. I'm glad I don't have that job!!