I haven’t really reached a really high score in this game but here are just a few tips for you.
Keep your fingers on the cursor keys! Remember which key one finger is on. That way, it would be much easier for you to move. You’ll be able to avoid hesitating that way!
Stay away from the mines! Stay at the sides! If the mines are surrounding the dubloon go around the area in circles and at the sides, making sure that you don’t stay near the mines. The mines will be confused and sometimes, they explode! Then, there’s your chance of getting the dubloon!