Thank you for trying angain. A score of 79 is already quite good! :-)
It depends on the situation and the level you are in. Exploration is more important in the early levels.
Could you please register. Currently you are listed as "Guest#90" in the global rankings. Would be nice to see your name there. Your password will be encrypted do to current standard, and I can neither see nor derive it. If you leave your email and allow email-notifications, I will send you the links, so you can watch the replays of your games.