I have not played Hoops. However, I mostly agree with the above - you can run your HBD with the minimal time by just putting 18-20 million scouting in either high school or college and putting 18-20 million in INTL scouting. Make sure you get one great INTL signing each year and make sure you make the most of your draft every year.
In your first few seasons, you won't win much, but most private worlds have a minimum win rule so you will need to make sure you hit that. You can trade prospects that you don't feel will make your MLB team or you can sign cheap free agents to help you meet the minimum win rule.
The above strategy is the formula that many owners use because it requires the least amount of effort and is the quickest path to success. However, if you want to, you can spend 10+ hours a week on HBD by either running multiple teams or running one team with a micro-managing philosophy. This latter way may help you avoid having those 100+ loss seasons on your record. If you watch things like your opponents weaknesses in each game (poor catcher, steal more; poor arms in the outfield, more aggressive on the base paths; poor splits against left handed hitters, load your lineup with lefties, etc.). This could help add wins. Back when I was running one team, I had one of my best records with a middle of the road squad. This was because I checked these things every single cycle. Now that I am running four teams, I just don't have the time to check the daily warts of each opponent in four different worlds three times a day.